Perkins 4.99 - Torque, Wear Limits, and Dimensions; Recommended Torque Tensions; Service Wear Limits; Manufacturing Data and Dimensions

TECHNICAL DATA-B.2
Recommended Torque Tensions
The following torque figures will
apply with the components
lightly oiled before assembly:-
4.107 and
4.99 4.108
Ibf ft kgf m
Nm
Ibf
ft
kgf m
Nm
Cylinder Head Nuts
42 5,81 57 60 8,3
81
Connecting Rod Setscrews
42 5,81 57
42
5,81
57
* Main Bearing Setscrews
85
11,5 115
85 11,5
115
Flywheel Setscrews
60
8,3
81 60
8,3
81
Idler Gear Hub Setscrews 36
4,98 49 36 4,98
49
Crankshaft Pulley Setscrew-1.56 in (39,6 mm)
long
150 20,7
203
150 20,7
203
with 1.875 in (47,6 mm) dia. washer
Crankshaft Pulley Setscrew -1.68 in (42,7 mm) long 190
26,3
250
with 1.75 in (44,6 mm) dia. washer (Cadmium Plated)
Crankshaft Pulley Setscrew (Phosphated)
230
31,5
310
Atomiser Securing Nuts
., .
12 1,7 16
12
1,7
16
High Pressure Fuel Pipe Nuts 15 2,1 20
15
2,1
20
Dynamo Pulley Retaining Nut 20 2,8 27
20 2,8
27
Alternator Pulley Retaining Nut
30
4,1
41
30
4,1
41
Thermostart Unit
10 1,38 13
10 1,38
13
Thermostart Insulating Adaptor
10 1,38 13
10
1,38
13
*The tab and shim washers may be discarded where used on earlier engines, but the setscrews must be tightened
to the torque loading indicated.
Service Wear Limits
The following "wear limits" indicate the condition when it is recommended that the respective items should be servicec
or replaced.
Cylinder Head Bow
Cylinder Head Bow
Longitud inal
Transverse
Maximum Bore Wear (when new liners are necessary)
Crankshaft Main and Big End Journal Wear
Crankshaft Main and Big End Journal Ovality
Maximum Crankshaft End Float
Valve Stem to
Guide Clearance inlet
Valve Stem to Guide Clearance
Valve Head Thickness at outer edge
Rocker Clearance on Shaft
Camshaft Journals Ovality and Wear
Camshaft End Float
Idler Gear End Float
exhaust
*Valve Head Depth below Head Face-inlet and exhaust
0.006 in (0,15 mm)
0.003 in (0,08 mm) concave
0.005 in (0,13 mm) convex
0.006 in (0,15mm)
0.001 in (0,03 mm)
0.0005 in (0,01 mm)
0.020 in (0,51 mm)
0.005 in (0,13 mm)
0.006 in (0,15 mm)
0.025 in (0,64 mm)
0.005 in (0,13mm)
0.002 in (0,05 mm)
0.020 in (0,51 mm)
0.010 in (0,25 mm)
0.048 in (1,22 mm)
*Where vehicle engines have to conform with the smoke density regulation B.S.AU 141 a: 1971, then the valve depths
must not exceed production limits as given on page B.8.
Manufacturing Data and Dimensions
The data regarding clearances and tolerances are given for personnel engaged upon major overhauls.
Further information can be obtained on request from the Technical Services Department, Perkins Engines Ltd.,
Peterborough.
CYLINDER BLOCK
Total Height of Cylinder Block
between Top & Bottom Faces
Parent
Bore Dia. for Cylinder Liner
Parent Bore Dia. for Cylinder Liner
Main Bearing Parent Bore
Camshaft Bore Dia. No.1
Camshaft Bore Dia. No.2
Camshaft Bore Dia. No.3
Tappet Bore Dia.
Fuel
Pump Drive Hub Bearing
Bore Dia.
4.108,4.107,4.99
4.108
4.107,4.99
4.108,4.107,4.99
4.108,4.107,4.99
4.108,4.107,4.99
4.108,4.107,4.99
4.108,4.107,4.99
4.108,4.107,4.99
9.936/9.939 in (252,374/252,451 mm)
3.249/3.250 in (82,525/82,550 mm)
Wet Liners
2.3950/2.3955 in (60,833/60,846 mm)
1.794/1.7955 in (45,568/45,606 mm)
1.78411.787 in (45,314/45,390 mm)
1.776/1.778 in (45,110/45,161 mm)
0.562/0.56325 in (14,275/14,307 mm)
1.812511.8141 in (46,037/46,078 mm)