Engine removal and installation, ventilation, cran,  M110

Association camshaft housing and camshafts

 

 

01—471 Association camshaft housing and camshafts

 

Note

 

Exchange engines are in part supplied with camshaft bearing intermediate stages and repair stages. In the event of repairs, install pertinent camshafts with re­duced bearing dia. Also refer to table: Camshaft housing with 11 bearing points.
Camshaft housings with repair stages are available for camshafts with reground bearing journals. Also refer to table: Camshaft housing with 11 bearing points.

 

Camshaft housing with 15 bearing points

 

Bearing points
1,9
3,10,11 4,5,12,13 6,7,14,15 8

 

bearing dia.
38.016 50.066 38.000 50.050
50.016 51.519 53.019 54.019 50.000 51.500 53.000 54.000

 

Standard dimension

 

journal dia.
23.993
49.950 49.950
51.440 51.421
52.940 52.921
53.940 53.921
23.980 49.934
49.934

 

bearing dia.
Intermediate stage —0.1 mm______
49.966 49.916 51.419 52.919 53.919 49.950 49.900 51.400 52.900 53.900

 

(exchange engines)
fl| dja
49.850 49.850
51.340
52.840
53.840
49.834 49.834 51.321 52.821 53.821

 

bearing dia.
49.816 49.765
51.269 51.250
52.769 52.750
53.769 53.750
49.800 49.750

 

Repair stage 1 -0.25 mm
journal dia.
49.700 49.700 51.190 52.690 53.690 49.684 49.684 51.171 52.671 53.671

 

bearing dia.
49.566 49.516 51.019 52.519 53.519 49.550 49.500 51.000 52.500 53.500

 

Repair stage 2 -0.50 mm
journal dia.
49.450 49.450
50.940 52.440 53.440 50.921 52.421 53.421
49.434 49.434

 

radial
0.057 0.124
0.100 0.132
0.050 0.082
0.060 0.098
0.060 0.098
0.060 0.098

 

Camshaft bearing play
axial
0.050 0.120

 

Sleeve for bearing a OD
37.950 37.925
ID
24.013 24.000

 

01.2-471/1 F3

 

 

 

Combinations in the event of repairs
a) Camshaft housing with 15 bearing points intake-camshaft code number 25, 67 and 33 with 7 bearing journals.
Exhaust-camshaft code number 24, 30, 57 and 71 with 8 bearing journals.
m110 - 0075-1.jpg

 

b) Camshaft housing with 15 bearing points, with bearing points 11 and 13 at intake end or 3 and 7 at exhaust end out of function.
Intake camshaft code number 74 and 91 with 5 bear­ing journals and intermediate stage or repair cam­shafts with reduced bearing dia.
Exhaust camshaft code no. 78 and 95 with 6 bearing journals and intermediate stage or repair camshafts with reduced bearing dia.
In this case, the oil bores of bearing points 11 and 13 or 3 and 7 on removed camshaft housing must be closed.
For this purpose, cut threads M 6, approx. 10 mm deep from below into oil bores (arrow) and screw-in threaded plug 000 913 006 110 with sealing compound.
m110 - 0075-2.jpg
X
close oil bores
m110 - 0075-3.jpg

 

c) Camshaft housing with 15 bearing points, with bearing points 11 and 13 (intake end) or bearing points 3.5 and 7 (exhaust end) without oil supply.
Intake-camshaft code number 25, 67 and 33 with 7 bearing points, of which bearing points 11 and 13 with 1 mm machined off.
Exhaust-camshaft code number 24, 57, 71 and 30, of which bearing points 3, 5 and 7 machined off by 1 mm.
m110 - 0075-4.jpg

 

01.2-471/2 F3

 

 

 

Exchange engines starting unit no. 464.130 are supplied in this version (c). When installing an exhaust-camshaft with code number 78 and 95 into camshaft housing version c, machine 1 mm from bearing journal 5 (arrow).
m110 - 0076-1.jpg

 

Camshaft housing with 15 bearing points of which 5 bearing points without oil bore

 

Bearing points
1,9
3, 11 4, 12 5, 13 6, 14, 15 7
8
10

 

 

Bearing
dia.
38.016
50.066
Bearing
38.000
50.050
points
Journal
dia.
23.993
49.950

 

 

 

23.980
49.934
51.0
51.519 51.500
52.5
53.019 53.000
54.0
54.019 50.016
54.000 50.000
49.950 49.934″
52.940 52.921
53.940 49.950
53.921 49.934

 

This camshaft housing is not manufactured as an intermediate or repair stage.

 

On this camshaft housing, the bearing points 3, 5, 7, 11 and 13 are without oil bore and their ID is 1 mm larger than the respective camshaft bearing journals. This camshaft housing can be used to install all cam­shafts with normal dimension.
m110 - 0076-2.jpg

 

This camshaft housing is attached together with cylinder head by means of 9 cylinder head bolts, M 12 x 145 mm (formerly M 12 x 150 mm), since the bolt head contact surfaces in camshaft housing were countersunk by 5 mm.
Attention!
On exchange engines starting unit number 496.861 (approx. starting October 1977) these 9 cylinder head bolts are installed with a length of 150 mm. Washers 5 mm thick part no. 186 990 09 40 are fitted to make sure that the thread lugs in cylinder crankcase are not forced off.
m110 - 0076-3.jpg

 

01.2-471/3 F3

 

 

 

Camshaft housing with 11 bearing points, of which 1 bearing point without oil bore

 

Bearing
points

 

1.9
2
4,12
5
6, 14, 15
8
10

 

Bearing
rlia
38.016
50.066
51.519

 

53.019
54.019
50.016
Bearing points
aia.
38.000
50.050
51.500
52.5
53.000
54.000
50.000

 

rlia
23.993
49.950
51.440

 

52.940
53.940
49.950

 

journal
Old.
23.980
49.934
51.421

 

52.921
53.921
49.934

 

Intermediate stage — 0.1 mm (exchange engines only)
Camshaft housing part no. 110 010 20 36 Intake camshaft part no. 110 051 77 01 Exhaust camshaft part no. 110 051 98 01

 

Bearing dia.
49.966
51.419
52.5
52.919 53.919
49.916 49.900
49.950 51.400
52.900 53.900

 

Journal dia.
49.850 51.340 49.834 51.321
52.840 53.840 49.850 52.821 53.821 49.834

 

Repair stage 1 — 0.25 mm
Camshaft housing part no. 110 010 21 36 Intake camshaft part no. 110 051 75 01 Exhaust camshaft part no. 110 051 79 01
Bearing dia.
49.816 49.800
51.269 51.250
52.5
52.769 53.769
49.765
52.750
53.750 49.750

 

Journal dia.
49.700 49.684
51.190 51.171
52.690 53.690 49.700
52.671
53.671
49.684

 

Repair stage 2 —0.50 mm
Camshaft housing part no. 110 010 22 36 Intake camshaft part no. 110 051 76 01 Exhaust camshaft part no. 110 051 80 01
Bearing dia.
49.566 51.019
52.5
52.519
53.519 49.516
49.550 51.000
52.500 53.500 49.500

 

Journal dia.
49.450 49.434
50.940 50.921
52.440 53.440 49.450 52.421 53.421 49.434

 

On this camshaft housing bearing point 5 is without oil bore and its ID is 1 mm larger than the respective camshaft bearing journal.
This camshaft housing can be used to install camshaft without changes on bearing journals.
m110 - 0077-1.jpg

 

01.2-471/4 F3

 

 

 

This camshaft housing is attached together with cylinder head by means of 9 cylinder head bolts M 12 x 145 (formerly M 12 x 150), since the bolt head contact surfaces in camshaft housing were counter­sunk by 5 mm.
Attention!
On exchange engines starting unit number 496.861 (approx. starting October 1977) these 9 cylinder head bolts are installed with a length of 150 mm. Washers 5 mm thick part no. 186 990 09 40 are fitted to make sure that the thread lugs in cylinder crankcase are not forced off.
m110 - 0078-1.jpg

 

01.2-471/5 F3