Engine cooling,  M110

Removal and installation of radiator

 

 

20—420 Removal and installation of radiator

 

Installation dimensions for radiator, fan and fan cover

 

Model
Fan distance “a”
to radiator, approx. mm
Fan distance to fan cover A
B

 

107.022/042
23

 

114.060/062
15
116.020/024/025
31
123.007/030/033/050/053/093
35
25
15

 

126.021/022/023
50
28

 

Radiator/fan
m110 - 0771-1.jpg
m110 - 0771-2.jpg
Fan cover/fan

 

Installation dimensions for radiator—air oil cooler

 

Model
dimension “a”
107
730 ± 1
114
555 ± 11) 633 ± 12)
116
685 ± 1
m110 - 0771-3.jpg
123
608 ±4
126

 

‘) At 565 mm front end width. 2) At 643 mm front end width.

 

20.2-420/1 F3

 

 

 

Tightening torques
Nm

 

Models 107, 114, 116
6-10

 

Radiator plug

 

Models 123, 126
1.5-21)

 

Air oil cooler drain plug
Models 107, 114, 116
30-35

 

This torque can be established by means of a washer or coin.

 

Note

 

Starting November 1979 the fan cover of model 123 is provided with a lateral covering (arrow) as a protec­tion against engine compartment contamination.
m110 - 0772-1.jpg

 

Removal

 

1 Drain coolant from radiator (20—010).

 

Models 107, 114, 116
2   Drain oil from air oil cooler by loosening coupling nut of upper oil hose.
3   Detach coolant hoses and hose connections at cooler. Plug oil hoses and connections with plastic caps.
4   Unscrew top of radiator housing, pull down out of clips and place above fan.
m110 - 0772-2.jpg
Models 107, 116
5 Press holder (arrow) outward.
6 Lift out radiator with air oil cooler.

 

20.2-420/2 F3

 

 

 

Model 114
7   Press rubber straps (arrow) out of holder.
8    Remove radiator with air oil cooler in upward direction.
m110 - 0773-1.jpg

 

Models 123, 126
9 Pull two clips (arrow) up and out of radiator hous­ing.
m110 - 0773-2.jpg
Model 123

 

Model 126
m110 - 0773-3.jpg

 

10 Lift radiator housing out of lower straps (arrow) and place behind fan.
m110 - 0773-4.jpg
Model 123

 

20.2-420/3 F3

 

 

 

Model 126
m110 - 0774-1.jpg
IMf wvw

 

11 Unscrew air oil cooler (arrows).
Model 123
m110 - 0774-2.jpg

 

Unscrew screw {1) and pull air oil cooler out of guide on radiator in upward direction (arrow) and put aside (model 126 only).
m110 - 0774-3.jpg
Model 126

 

12    Disconnect coolant hoses and transmission oil cooler hoses for models with an automatic trans­mission.
13   Pull off holder (arrows) upward and lift out radiator.
m110 - 0774-4.jpg
Model 123

 

20.2-420/4 F3

 

 

 

Model 126
m110 - 0775-1.jpg

 

Installation

 

14    hor installation proceed vice versa.
Pay attention to distance of fan in relation to radiator and fan cover.
15   Test cooling system with pressure tester.

 

20.2-420/5 F3