Crankcase; Cylinder Bores; Camshaft Bearings - Mercedes-Benz Unimog 435 Service Manual

01.8
General
352/352
A
Crankcase
Engine Type 352
I
352 A
b
Overall height of crankcase
359,10
a
mm
(Production size)
.
359,00
Repair stage I "
mm
358,80
358,70
a
Repair stage 11
'I
mm
358,50
358,40
Repair stage III
'I
mm
358,20
358,10
Permissible
Crosswise
b 0,017 mm
unevenness
UZOI - 0021
of mating surface
Lengthwise
e
mm 0,03
e
Peak-ta-valley height
mm 0,008 up to 0,016
of upper mating surface
Permissible parallel misalignment
of upper to lower mating surface
d mm
0,1
in lengthwise direction
Pressure test in water bar 2,5
Piston may recede = - mm 0,07
Piston may project =+ mm 0,30
1) If mating surface is remachined to next repair stage, pistons of reduced compression height must be installed.
Cylinder Bores (e)
Normal Normal I Normal 11 Repair Repair Repair
stage I stage 11 stage III
mm mm mm
mm
mm mm
97,010
97,085 97,135 97,510 " 98,010 "
98,510
'I
96,990 97,065 97,115 97,490 97,990 98,490
97,010
21 -
-
97,0102)
96,990 96,990
Permissible ovality mm 0.01
Permissible conicity
mm
0,01
Permissible deviation of
c~linder
bores
perpendicular to cranksha t axis, relative to 200 mm length
mm
0,04
Peak-ta-valley height of the cylinder bores mm 0,003 up to 0,005
Waviness of cylinder bores
mm
max. 50% of peak-ta-valley height
at top reversal point
mm max.0,12
Wear in liner
of 1 st piston ring
in centre of liner mm max.0.05
Bore depth for machining to the repair stages
mm
min. 250
1) Not engine 353.9591 977.
2) Possible repair- crankcase with dry cylinder liners may be installed. If necessary, the scope of work can be requested.
Camshaft Bearings
Basic bores in crankcase
1.2/2
60,030
60,000