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Perkins A4.212 Engine

General Technical Data

Perkins A4.212 Engine Specifications

Engine Model ....... A4.212
Engine Type ....... Four Stroke, direct Injection diesel
Nominal Bore, in (mm) ....... 3.875 (98,43)
Stroke, in (mm) ....... 4.5 (114,3)
No. of Cylinders ....... 4
Cycle ....... Four-Stroke
Cylinder Arrangement ....... In-Line
Cubic Capacity, cu.in (L) ....... 212 (3,47)
Maximum Power Rating, kW (Hp) ....... 46,0 (62,0)
Rated Engine Speed, rpm ....... 2200
Maximum Torque, Nm (Ibf-ft) ....... 229 (169)
Torque Speed, prm ....... 1350
Compression Ratio ....... 17.5:1
Direction of Engine Rotation Clockwise from the Front
Firing Order ....... 1-3-4-2
Induction System ....... Naturally aspirated
Combustion System ....... Direct Injection

Fuel System

Fuel Injection Pump Make ....... C.A.V.
Fuel Injection Pump Type ....... D.P.A.
Injection Pump Rotation ....... Clockwise
Injection Pump Plunger Dia ....... 8,5 mm
Fuel Lift Pump Type ....... A.C. Delco. V.P. Series
Fuel Lift Pump Method of Drive ....... Eccentric on Camshaft
Fuel Filter Element Type ....... Paper
Fuel Filter Valve Type ....... Gravity Vent Valve

Lubricating System

Relief Valve Type ....... Spring loaded plunger
Pressure Setting ....... 5,86 bar
Length of Plunger Outside Diameter of Plunger, in (mm) ....... 0,826 (20,98)
Inside Diameter of Valve Housing Bore, in (mm) ....... 0,5585-0,5595 (14,186-14,211)
Clearance of Plunger in Bore Outside Diameter of Spring, in (mm) ....... 0,570 (14,5)
Oil Capacity (Standard) ....... 8.4 qts (8 litres)
Oil Pump Type ....... Rotor type
Lubricating Oil Filter Type ....... Full Flow

Cooling System

Engine Water Capacity ....... 13.0 qts (12.5 liters)
Thermostat Type ....... Bellows or Wax
Opening Temperature Fully ....... 170-180 F (77-83C)
Water Pump Type ....... Centrifugal
Water Pump Outside Diameter of Shaft for Pulley, in (mm) ....... 0,7492-0,7497 (19,03-19,04)
Water Pump Inside Diameter of Pulley Bore, in (mm) ....... 0,7508-0,7516 (19,07-19,0)
Water Pump Clearance Fit of Pulley on Shaft, in (mm) ....... 0,0011-0,0024 (0,03-0,06)
Water Pump Outside Diameter of Shaft for Impeller, in (mm) ....... 0,6262-0,6267 (15,90-15,92)
Water Pump Inside Diameter of Impeller Bore, in (mm) ....... 0,6249-0,6257 (15,87-15,89)

Perkins A4.212 Maintenance Data

Engine oil type ....... SAE 10W-30/15W-40
Engine oil capacity, L (qts) ....... 8.0 (8.4)
Coolant capacity, L (qts) ....... 12.5 (13.0)
Oil filter change interval ....... Every 250 hours
Oil change interval ....... Every 250 hours
Fuel filter change interval ....... Every 500 hours

Perkins A4.212 Service Specifications

Cylinder Block

Total Height of Cylinder Block between Top and Bottom Faces, in (mm) ....... 17,367-17,375 (441,12-441,33)
Parent Bore Diameter for Cylinder Liner (Chrome Thin Wall), in (mm) ....... 3,9325-3,9635 (100,65-100,67)
Parent Bore Diameter for Cylinder Liner (Chrome Thick Wall), in (mm) ....... 4,0625-4,0635 (103,19-103,22)
Parent Bore Diameter for Flangeless Cylinder Liner (Cast Iron), in (mm) ....... 4,0615-4,0625 (103,16-103,19)
Parent Bore Diameter for Flanged Cylinder Liner (Cast Iron), in (mm) ....... 4,0625-4,0635 (103,19-103,22)
Depth of Recess for Liner Flange (Cast Iron), in (mm) ....... 0,150-0,154 (3,81-3,91)
Depth of Recess for Liner Flange (Chrome Thin Wall) early type, in (mm) ....... 0,046-0,049 (1,17-1,25)
Depth of Recess for Liner Flange (Chrome Thin Wall) later type, in (mm) ....... 0,049-0,051 (1,25-1,30)
Depth of Recess for Liner Flange (Chrome) Thick Wall, in (mm) ....... 0,150-0,152 (3,81-3,86)
Main Bearing Parent Bore Diameter, in (mm) ....... 3,166-3,167 (80,42-80,44)
Camshaft Bore Diameter No. 1 for Bush (where fitted), in (mm) ....... 2,1875-2,1887 (55,56-55,59)
Camshaft Bearing Bush Internal Diameter fitted, in (mm) ....... 2,0000-2,0017 (50,8-50,84)
Camshaft Bore Diameter No. 1, in (mm) ....... 2,000-2,001 (50,80-50,83)
Camshaft Bore Diameter No. 2, in (mm) ....... 1,990-1,9918 (50,55-50,59)
Camshaft Bore Diameter No. 3, in (mm) ....... 1,970-1,9718 (50,04-50,08)

Pistons

Pistons Type ....... Cavity Crown
Piston Height in Relation to Cylinder Block, in (mm) ....... 0,015-0,021 (0,38-0,53)
Bore Diameter for Gudgeon Pin, in (mm) ....... 1,37485-1,37505 (34,92-34,93)
Compression Ring Groove Width (Numbers 1, 2 and 3), in (mm) ....... 0,0957-0,0967 (2,43-2,46)
Scraper Ring Groove Width (No. 4), in (mm) ....... 0,2525-0,2535 (6,41-6,44)

Piston Rings

Pistons ....... High Compression / Low Compression
Top Compression Ring ....... Chrome Faced / Chrome Plated
Second Compression Ring ....... Chrome Faced, Internally Stepped / Cast Iron, Plain
Third Scraper Ring ....... Spring Loaded Conformable
Third Compression ....... Internally Stepped
Fourth Scraper ....... Spring Loaded Conformable
Compression Ring Width (Number 1), in (mm) ....... 0,0927/0,0937 (2,35/2,38)
Compression Ring Widths (Numbes 2 and 3), in (mm) ....... 0,0928/0,0938 (2,36/2,38)
Ring Clearance Groove (Number 1), in (mm) ....... 0,002/0,004 (0,05/0,10)
Ring Clearance Groove (Numbers 2 and 3), in (mm) ....... 0,0019/0,0039 (0,05/0,10)
Ring Gap (Chromed), in (mm) ....... 0,016/0,034 (0,41/0,86)
Ring Gap (Cast Iron), in (mm) ....... 0,012/0,030 (0,30/0,76) sealed power scraper

Small End Bush

Type ....... Steel Backed, Lead Bronze Lined
Outside Diameter of Small End Bush, in (mm) ....... 1,535-1,5365 (38,99-39,03)
Length of Small End Bush, in (mm) ....... 1,316-1,336 (33,43-33,93)
Inside Diameter before Reaming, in (mm) ....... 1,359-1,363 (34,52-34,62)
Inside Diameter after Reaming, in (mm) ....... 1,37575-1,3765 (34,94-34,96)
Clearance between Small End Bush and Gudgeon Pin, in (mm) ....... 0,00075-0,0017 (0,019-0,043)

Connecting Rod

Type ....... H-Section
Cap Location to Connecting Rod ....... Serrations
Big End Parent Bore Diameter, in (mm) ....... 2,6460-2,6465 (67,21-67,22)
Small End Parent Bore Diameter, in (mm) ....... 1,53125-1,53225 (38,90-38,92)
Length from Centre Line of Big End to Centre Line of Small End, in (mm) ....... 8,624-8,626 (219,05-219,10)
Length from Centre Line of Big End to Centre Line of Big End Width, in (mm) ....... 1,577-1,580 (40,06-40,13)

Crankshaft

Overall Length, in (mm) ....... 24,01-24,04 (609,85-610,62)
Main Journal Diameter, in (mm) ....... 2,9984-2,9992 (76,16-76,18)
Main Journal Length (No. 1), in (mm) ....... 1,453-1,473 (36,91-37,41)
Main Journal Length (No. 2, 4 and 5), in (mm) ....... 1,545-1,549 (39,24-39,34)
Main Journal Length (No. 3), in (mm) ....... 1,738-1,741 (44,15-44,22)
Crankpin Diameter, in (mm) ....... 2,4988-2,4996 (63,47-63,49)
Crankpin Length, in (mm) ....... 1,5885-1,5915 (40,35-40,42)
Surface Finish (All Journals), micro in (microns) ....... 16 (0,4) maximum
Main Journal and Crankpin Regrind Undersizes, in (mm) ....... -0,010, 0,020 and 0,030 (-0,25, 0,51 and 0,76)
Oil Seal Helix Diameter (rope seals only), in (mm) ....... 3,124-3,125 (79,35-79,38)
Oil Seal Helix Width, in (mm) ....... 0,050-0,080 (1,27-2,03)
Oil Seal Helix Depth, in (mm) ....... 0,004-0,008 (0,10-0,20)
Flange Diameter, in (mm) ....... 5,247-5,249 (133,27-133,32)
Spigot Bearing Recess Depth, in (mm) ....... 0,781 (19,84)
Spigot Bearing Recess Bore, in (mm) ....... 1,8497-1,8502 (46,98-47,00)
Crankshaft End Float, in (mm) ....... 0,002-0,015 (0,05-0,38)

Crankshaft Thrust Washers

Type ....... Steel Backed, Aluminium Tor Lead Bronze Faced
Position in Engine ....... Centre Main Bearing
Thrust Washer Thickness (STD), in (mm) ....... 0,089-0,091 (2,26-2,31)
Thrust Washer Thickness (O/S), in (mm) ....... 0,096-0,099 (2,44-2,51)
Thrust Washer Outside Diameter, in (mm) ....... 4,088-4,098 (103,84-104,90)
Thrust Washer Inside Diameter, in (mm) ....... 3,420-3,430 (86,87-87,12)

Crankshaft Main Bearings

Type ....... Pre-Finished, Steel Backed, Aluminium Tor Lead Bronze Faced
Shell Width (No. 1, 2, 4, and 5), in (mm) ....... 1,245-1,255 (31,62-31,88)
Shell Width (No. 3), in (mm) ....... 1,435-1,445 (36,45-36,70)
Outside Diameter of Main Bearing, in (mm) ....... 3,167 (80,41)
Inside Diameter of Main Bearing, in (mm) ....... 3,0010-3,0026 (76,23-76,27)
Main Bearing Running Clearance, in (mm) ....... 0,0018-0,0042 (0,05-0,11)
Shell Thickness, in (mm) ....... 0,0822-0,0825 (2,088-2,098)

Connecting Rod Bearings

Type ....... Pre-Finished, Steel Backed, Aluminium Tor Lead Bronze Faced
Shell Width, in (mm) ....... 1,245-1,255 (31,62-31,88)
Outside Diameter of Connecting Rod Bearing, in (mm) ....... 2,6465 (67,22)
Inside Diameter of Connecting Rod Bearing, in (mm) ....... 2,5008-2,5019 (63,52-63,55)
Connecting Rod Bearing Running Clearance, in (mm) ....... 0,0012-0,0031 (0,03-0,08)
Shell Thickness, in (mm) ....... 0,0723-0,0726 (1,836-1,844)

Camshaft

Journal Diameter (Number 1), in (mm) ....... 1,9965-1,9975 (50,71-50,74)
Cylinder Block Camshaft Bore Diameter (Number 1), in (mm) ....... 2,000-2,001 (50,8-50,83)
Journal Running Clearance (Number 1), in (mm) ....... 0,0025-0,0045 (0,06-0,11)
Journal Diameter (Number 2), in (mm) ....... 1,9865-1,9875 (50,46-50,48)
Cylinder Block Camshaft Bore Diameter (Number 2), in (mm) ....... 1,990-1,992 (50,55-50,60)
Journal Running Clearance (Number 2), in (mm) ....... 0,0025-0,0053 (0,06-0,14)
Journal Diameter (Number 3), in (mm) ....... 1,9665-1,9675 (49,95-49,98)
Cylinder Block Camshaft Bore Diameter (Number 3), in (mm) ....... 1,970-1,972 (50,04-50,09)
Journal Running Clearance (Number 3), in (mm) ....... 0,0025-0,0053 (0,06-0,14)
Cam Lift, in (mm) ....... 0,300-0,303 (7,62-7,70)
Oilways for Rocker Shaft Lubrication, in (mm) ....... No.2 Journal

Camshaft Thrust Washer

Type ....... 360 degrees
Thrust Washer Outside Diameter, in (mm) ....... 2,872-2,874 (72,95-73,00)
Cylinder Block Recess Diameter for Thrust Washer, in (mm) ....... 2,875-2,885 (73,03-73,28)
Clearance Fit of Washer in Recess, in (mm) ....... 0,001-0,013 (0,03-0,33)
Thrust Washer Inside Diameter, in (mm) ....... 1,75 (44,45)
Thrust Washer Thickness, in (mm) ....... 0,216-0,218 (5,47-5,54)
Cylinder Block Recess Depth for Thrust Washer (Early), in (mm) ....... 0,152-0,154 (3,86-3,91)
Cylinder Block Recess Depth for Thrust Washer (Later), in (mm) ....... 0,187-0,190 (4,75-4,83)
Cylinder Block Recess Depth for Thrust Washer (Current), in (mm) ....... 0,215-0,218 (5,46-5,53)
Thrust Washer Protrusion beyond Cylinder Block Front Face (Early), in (mm) ....... 0,062-0,066 (1,53-1,68)
Thrust Washer Protrusion beyond Cylinder Block Front Face (Later), in (mm) ....... 0,026-0,031 (0,66-0,79)
Thrust Washer Relationship to Cylinder Block Front Face (Current), in (mm) ....... -0,002-+0,003 (-0,05-+0,07)
Camshaft End Float, in (mm) ....... 0,004-0,016 (0,10-0,41)

Cylinder Head

Cylinder Head Length, in (mm) ....... 19,875 (504,82)
Cylinder Head Depth, in (mm) ....... 4,0625 ± 0,015 (103,20 ± 0,38)
Skimming allowance on Cylinder Head Face, in (mm) ....... 0,012 (0,30)
Min. Cylinder Head Depth after Skimming, in (mm) ....... 4,0355 (102,51)
Max. Nozzle Protrusion after Skimming, in (mm) ....... 0,175 (4,44)
Leak Test Pressure ....... 2,06 bar
Valve Seat Angle ....... 45 deg
Valve Bore in Cylinder Head, in (mm) ....... 0,37425-0,37525 (9,51-9,53)
Valve Guide Parent Bore Diameter, in (mm) ....... 0,6247-0,6257 (15,87-15,89)
Inner Valve Springs Fitted Length, in (mm) ....... 1,5625 (39,7)
Outer Valve Springs Fitted Length, in (mm) ....... 1,780 (45,22)

Valve Guides (if fitted)

Inside Diameter (Inlet and Exhaust), in (mm) ....... 0,375-0,376 (9,53-9,55)
Outside Diameter, in (mm) ....... 0,6259-0,6265 (15,89-15,91)
Interference Fit of Guide in Cylinder Head Bore, in (mm) ....... 0,0002-0,0018 (0,005-0,046)
Depth of Counterbore (Exhaust Guide), in (mm) ....... 0,4062 (10,32)
Overall Length of Guide (Exhaust), in (mm) ....... 2,4375 (61,92)
Overall Length of Guide (Inlet), in (mm) ....... 2,281 (57,94)
Guide Protrusion Above Cylinder Head Top Face, in (mm) ....... 0,594 (15,09)

Exhaust Valves

Valve Stem Diameter, in (mm) ....... 0,372-0,3728 (9,45-9,47)
Clearance Fit of Valve in Guide (if fitted), in (mm) ....... 0,00225-0,004 (0,06-0,10)
Clearance Fit of Valve in Head, in (mm) ....... 0,00145-0,00325 (0,04-0,08)
Valve Head Diameter, in (mm) ....... 1,435-1,445 (36,45-36,70)
Valve Face Angle ....... 45 deg
Valve Head Depth below Cylinder Head Face (earlier), in (mm) ....... 0,029-0,039 (0,74-0,99)
Valve Head Depth Below Cylinder Head Face (current), in (mm) ....... 0,047-0,057 (1,19-1,45)
Overall Length of Valve, in (mm) ....... 4,847-4,863 (123,11-123,52)
Service Valve Stem Oversizes, in (mm) ....... 0,003; 0,015 and 0,030 (0,08; 0,38 and 0,76)

Inlet Valves

Valve Stem Diameter, in (mm) ....... 0,3725-0,3735 (9,46-9,48)
Clearance Fit of Valve in Guide (if fitted), in (mm) ....... 0,0015-0,0035 (0,04-0,09)
Clearance Fit of Valve in Head, in (mm) ....... 0,00075-0,00275 (0,02-0,07)
Valve Head Diameter, in (mm) ....... 1,736-1,746 (44,09-44,36)
Valve Face Angle ....... 45 deg
Valve Head Depth Below Cylinder Head Face, in (mm) ....... 0,035-0,045 (0,89-1,14)
Overall Length of Valve, in (mm) ....... 4,831-4,847 (122,71-123,11)
Service Valve Stem Oversizes, in (mm) ....... 0,003; 0,015 and 0,030 (0,08; 0,38 and 0,76)

Tappets

Overall Length, in (mm) ....... 2,96875 (75,41)
Outside Diameter Tappet Shank, in (mm) ....... 0,7475-0,7485 (18,99-19,01)
Cylinder Block Tappet Bore Diameter, in (mm) ....... 0,750-0,7513 (19,05-19,08)
Tappet Running Clearance in Bore, in (mm) ....... 0,0015-0,0038 (0,04-0,10)
Outside Diameter of Tappet Foot, in (mm) ....... 1,1875 (30,16)

Rocker Shaft

Overall Length of Shaft, in (mm) ....... 16,796 (426,62)
Outside Diameter of Shaft, in (mm) ....... 0,7485-0,7495 (19,01-19,04)
Inside Diameter of Lever Bore, in (mm) ....... 0,7505-0,7520 (19,06-19,10)
Lever Clearance on Rocker Shaft, in (mm) ....... 0,001-0,0035 (0,03-0,09)

Perkins A4.212 Tightening Torque Specs

Cylinder Head Nuts/Setscrews (1/2 in), Nm (Ibf-ft) ....... 136 (100)
Cylinder Head Setscrews with Integral Head, Nm (Ibf-ft) ....... 120 (88)
Connecting Rod Nuts, Nm (Ibf-ft) ....... 122 (90)
Main Bearing Setscrews, Nm (Ibf-ft) ....... 244 (180)
Idler Gear Hub Setscrews, Nm (Ibf-ft) ....... 41 (30)
Fuel Injection Pump Gear Retaining Setscrews, Nm (Ibf-ft) ....... 27 (20)
D.P.S. Fuel Injection Pump Gear Retaining Nut, Nm (Ibf-ft) ....... 81 (60)
Flywheel Setscrews, Nm (Ibf-ft) ....... 108 (80)
Flywheel Place Bolts, Nm (Ibf-ft) ....... 122 (90)
Flywheel Housing Setscrews (Standard), Nm (Ibf-ft) ....... 49 (36)
Camshaft Gear Retaining Setscrews, Nm (Ibf-ft) ....... 68 (50)
Crankshaft Pulley Retaining Setscrew, Nm (Ibf-ft) ....... 406 (300)
Oil Filter Setscrews/Nuts, Nm (Ibf-ft) ....... 41 (30)
Atomiser Securing Nuts, Nm (Ibf-ft) ....... 18 (14)
Atomiser Clamp Nuts, Nm (Ibf-ft) ....... 12 (9)
Rockershaft Support Brackets (Cast Iron), Nm (Ibf-ft) ....... 74 (54)
High Pressure Fuel Pipe Nuts, Nm (Ibf-ft) ....... 20 (15)
Dynamo Pulley Retaining Nut, Nm (Ibf-ft) ....... 27 (20)
Alternator Pulley Retaining Nut, Nm (Ibf-ft) ....... 41 (30)
Balancer Retaining Setscrews, Nm (Ibf-ft) ....... 50 (40)