Table 1-1. Engine Repair and Replacement Standards
For Engine Model D333TA--Continued
Manufacturer's dimensions
Desired clearance
Maximum
Component
and tolerances in inches
allowable wear
Min
Max
Min
Max
or clearances
Rocker Arm:
Bearing bore - .......................................................
0.7260
0.7266
Clearance between shaft and bearing ..................
0.0010
0.006
------------
------------
0.005
Turbocharger:
Clearance between impeller and bearing housing
(shaft pushed toward impeller end) ...............
0.018
0.022
End clearance.......................................................
0.004
0.006
------------
------------
0.008
Bearing diameter (id) ............................................
0.6880
0 6883
Bearing diameter (od) ...........................................
1.0585
1 0590
Maximum allowable bearing clearance-(satisfactory
if compressor wheel and/or turbine wheel bore
have not rubbed cover on housing)
Journal diameter ...................................................
0.6862
0.6855
Housing bore diameter ........................................ -
1.0625
1.0630
Thickness of thrust bearing ..................................
0.225
0.226
Thickness of thrust rings .......................................
0.099
0.100
Width of groove in sleeve- ....................................
0.128
0.130
Side clearance in groove of sleeve with two ring seals
installed side by side ...........................................
0.002
0.006
Minimum ring seal width .......................................
------------
------------
------------
------------
0.062
Maximum ring seal groove width ..........................
------------
------------
------------
------------
0.068
Valves:
Valve face angle 29 1/4.
Valve seat angle 30
Valve width:
Inlet................................................................
------------
0.076
Exhaust..........................................................
------------
0.078
Valve height (top of valve to face of head with valve
seated):
Inlet - .............................................................
0.082
0.128
Exhaust..........................................................
0.082
0.128
Exhaust:
Clearance (hot) .....................................................
0.025
Clearance (cold) ...................................................
0.028
Stem clearance in bushing ...................................
0.003
0.005
Maximum clearance with new valve .....................
------------
------------
------------
------------
0.007
Inlet:
Clearance (hot) .....................................................
0.015
Clearance (cold) ...................................................
0.017
Stem clearance in bushing ...................................
0.003
0.005
Maximum clearance with new valve .....................
------------
------------
------------
------------
0.007
Valve Lifters:
Bore diameter .......................................................
1.3125
1.3135
Lifter diameter.......................................................
1.3100
1.3110
Maximum clearance..............................................
------------
------------
------------
------------
0.009
Valve Springs:
Force when compressed to 21 in .........................
53.20
58.90
Water Pump:
Clearance. between impeller and housing ..........
0.005
0.015
Table 1-2. Engine Repair and Replacement Standards
For Engine Model 687C-18-ES
Manufacturer's dimensions Desired clearance Maximum
Maximum
Component
and tolerances in inches
allowable
allowable
Min
Max
Min
Max
wear
clearances
Valves:
Valve clearance (cold) ........................................
0.012
0.014
Valve guide--to-stem clearance .........................
0.001
0.003 -------- -------------- ------------ --------------
0.007
Rocker arm-to-bushing clearance .......................
0.002
0.003 -------- -------------- ------------ 0.006
Rocker arm-to-pivot clearance ............................
0.001
0.002 -------- -------------- ------------ --------------
0.005
1-5
AGO 20051A
