W46.20-0021-09
1 | Steering bracket | 15 | Oil pressure switch | 31 | Oil pressure line (circuit 1) | ||
2 | Screw | 16 | Screw | 32 | Oil return feed line (circuit 1) | ||
3 | Screw | 17 | Proportioning valve | 33 | Oil return line (circuit 2) | ||
4 | Fitted bolt | 18 | Nuts | 34 | Oil return line (circuit 2) | ||
5 | Nut (self-locking) | 19 | Pitman arm | 35 | Oil pressure line (circuit 2) | ||
6 | Boot | 20 | Nut | 36 | Control line (circuit 1) | ||
7 | Universal joint | 21 | Drag link (between steering gear (11) and 1st steering idler arm) | 37 | Oil pressure line (circuit 2) | ||
8 | Nut | 22 | Drag link (between steering gear (11) and 1st front axle steering arm) | 38 | Screw | ||
9 | Screw | 23 | Electrical connector | 39 | Pressure reservoir | ||
10 | Bracket | 26 | Electrical connector | A | Hydraulic line (to tandem hydraulic cylinder, right steering movement, circuit 1) | ||
11 | Steering gear | 27 | Screw | B | Hydraulic line (to tandem hydraulic cylinder, left steering movement, circuit 1) | ||
12 | Oil reservoir | 28 | Oil pressure line (circuit 2) | C | Hydraulic line (to tandem hydraulic cylinder, steering angle set to right, circuit 2) | ||
13 | Fill level sensor | 29 | Screw | D | Hydraulic line (to tandem hydraulic cylinder, steering angle set to left, circuit 2) | ||
14 | Bracket | 30 | Oil pressure line (circuit 1) |
11 | Steering gear |
19 | Pitman arm |
20 | Nut |
40 | Lifting device |
41 | Holding device |
W46.20-A035-02
6 | Boot |
7 | Universal joint |
8 | Nut |
9 | Screw |
11 | Steering gear |
11.1 | Primary shaft |
19 | Pitman arm |
20 | Nut |
24 | Puller |
E | Mark |
F | Assembly slot |
G | Mark |
H | Mark |
W46.20-1157-06
Danger | Risk of death caused by vehicle slipping or toppling off during lifting | Only lift vehicle at the lift support points specified by the vehicle manufacturer. | |
Warning | Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure.Risk of poisoning from swallowing hydraulic fluid. | Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses. | |
Warning | Risk of injury from being trapped in the swivel range of steered axles | Ensure that no persons or objects are in the swivel range of all steered axles when turning the steering wheel. Do not stand in the swivel range of the additional steering axle when the engine is running. | |
Warning | Risk of injury caused by body parts being pinched or crushed as cab is tilted | Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure it with the safety strut. | |
Topical note | Notes on self-locking nuts and bolts | ||
Topical note | Special instructions for lifting and supporting vehicle | ||
Topical note | Notes on maintenance and repair work | ||
Topical note | Notes on tilting the cab | ||
Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | |||
Notes on safety-relevant components | |||
Assessment of steering after accidents | |||
| Remove | ||
1 | Fix holding device (41) for loosening and tightening pitman arm (19) in place under a rear wheel on driver's side. | Only when replacing the steering gear (11) or pitman arm (19). | |
To fix the vehicle in place, drive the corresponding rear wheel onto the holding device (41). | |||
Holding device | |||
2 | Secure vehicle to prevent it moving away. | ||
3 | Raise vehicle at steered front axles far enough so that the wheels can turn freely, and jack up vehicle. | ||
4.1 | Turn steering full lock to the right. | Left-hand drive vehicle | |
4.2 | Turn steering full lock to the left. | Right-hand drive vehicle | |
5 | Open maintenance flap. | ||
6 | Tilt cab. | ||
7 | Remove entrance together with front splash guard. |
| |
Model 942.3, 943.3, 950.3, 952.3, 953.3 | |||
8 | Remove rear support arm for entrance. | Only for model 942.3, 943.3 | |
9 | Detach solenoid valves together with holder and fasten at the side. | Only for model 942.3, 943.3 | |
10 | Detach clamps of hydraulic lines (A, B, C, D) from frame. | ||
11 | Detach hydraulic lines (A, B, C, D) from steering gear (11). | Counterhold corresponding fitting on steering gear (11). | |
Plug | |||
12 | Disconnect electrical connector (23) from fill level sensor (13). | ||
13 | Remove oil container (12). | Collect escaping oil in a suitable container. | |
14 | Remove holder (10) for oil container (12). | ||
15 | Detach oil pressure line (30) from oil pressure line (31). | Collect escaping oil in a suitable container. Plug openings. | |
Plug | |||
16 | Detach oil pressure line of emergency steering pump from oil pressure line (28). | Collect escaping oil in a suitable container. Plug openings. | |
Plug | |||
17 | Remove holder for pressure reservoir (39). | ||
18 | Disconnect electrical connector (26) from oil pressure switch (15). | ||
19 | Detach proportional valve (17) from holder (14). | ||
20 | Detach oil return feed lines (32, 34) from steering gear (11). | Counterhold corresponding fitting on steering gear (11). | |
Plug | |||
21 | Detach oil pressure lines (31, 37) from steering gear (11). | Counterhold corresponding fitting on steering gear (11). | |
Plug | |||
22 | Detach holder (14) together with oil pressure lines (28, 31, 35, 37), oil return feed lines (32, 33, 34), control line (36), pressure reservoir (39) and proportional valve (17) from steering gear (11). | ||
23 | Remove drag link (22). | ||
24 | Remove drag link (21). | ||
25 | Detach boot (6) from steering gear (11) and slide upward. | ||
26 | Move steering gear (11) to center position. | ||
To do so, turn steering all the way to the left or right. While doing this, determine the number of turns on the steering shaft. Then turn steering back by half the number of turns and align primary shaft (11.1) to steering gear (11) so that the marks (G and H) line up. | |||
27 | Secure steering wheel against turning. | Fix the steering wheel in place on the support rod using e.g. cable ties. Ensure that steering gear (11) is still at center position before securing. | |
28 | Check mark (G) on primary shaft (11.1) relative to lower universal joint (7) assembly slot (F). | If assembly slot (F) has moved, | |
| |||
Mark installation position of lower universal joint (7) relative to primary shaft (11.1). | |||
29 | Detach steering shaft with universal joint (7) from steering gear (11) and fasten at the side. | ||
30 | Attach lifting belt to steering gear (11). | | |
31 | Using suitable lifting gear, detach steering gear (11) from steering bracket (1) and place on floor or suitable tool cart. | ||
32 | Remove lifting belt and attach lifting device (40) to steering gear (11). | Only when replacing the steering gear (11) or pitman arm (19). | |
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Lifting device | |||
33 | Use suitable lifting gear to transport steering gear (11) to holding device (41) and guide pitman arm (19) into holding device (41). | Only when replacing the steering gear (11) or pitman arm (19). | |
Holding device | |||
34 | Mark installation position of pitman arm (19) relative to pitman arm shaft on steering gear (11). | Only when replacing the steering gear (11) or pitman arm (19). | |
There are two marks (E) on the pitman arm (19): One for the installation position in right-hand drive vehicles, and the other for the installation position in left-hand drive vehicles. | |||
35 | Loosen nut (20). | Only when replacing the steering gear (11) or pitman arm (19). | |
Do not remove nut (20). To pull off the pitman arm (19), the nut (20) must be screwed onto the pitman arm shaft at least as far as the collar. | |||
36 | Pull off pitman arm (19) using puller (24). | Only when replacing the steering gear (11) or pitman arm (19). | |
If necessary, lift steering gear (11) slightly or place onto suitable base. | |||
Puller | |||
37 | Remove nut (20) and take off pitman arm (19). | Only when replacing the steering gear (11) or pitman arm (19). | |
If necessary, lift steering gear (11) slightly. | |||
38 | Place steering gear (11) onto suitable transporting device and remove lifting device (40). | If steering gear (11) is being replaced. | |
Lifting device | |||
| Install | ||
39 | Attach lifting device (40) to steering gear (11). | Only if steering gear (11) was replaced. | |
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Lifting device | |||
40 | Slide pitman arm (19) onto pitman arm shaft and tighten nut (20) slightly by hand. | Only if steering gear (11) or pitman arm (19) was replaced. | |
Observe marks (E) as well as marks you have applied yourself. | |||
41 | Use suitable lifting gear to transport steering gear (11) to holding device (41) and guide pitman arm (19) into holding device (41). | Only if steering gear (11) or pitman arm (19) was replaced. | |
Holding device | |||
42 | Tighten nut (20). | Only if steering gear (11) or pitman arm (19) was replaced. | |
STEERING GEAR 765.887Nut, steering gear pitman arm to steering gear | |||
HEMA dual-circuit power steeringNut, steering gear pitman arm to steering gear | |||
43 | Lift steering gear (11), guide out of holding device (41) and place onto suitable transporting device. | Only if steering gear (11) or pitman arm (19) was replaced. | |
44 | Remove lifting device (40) and attach lifting belt to steering gear (11). | Only if steering gear (11) or pitman arm (19) was replaced. | |
45 | Attach steering gear (11) to steering bracket (1). | STEERING GEAR 765.887Bolt/nut, steering gear to steering bracket | |
HEMA dual-circuit power steeringBolt/nut, steering gear to steering bracket | |||
46 | Detach lifting belt from steering gear (11). | ||
47 | Move steering gear (11) to center position. | ||
If necessary, turn primary shaft (11.1) all the way once to the left or right up to the end stop. Then turn the primary shaft (11.1) all the way in the opposite direction and count the number of turns while doing so. Finally, turn primary shaft (11.1) back by half the number of turns and align to steering gear (11) so that the marks (G und H) line up. | |||
Adapter kit | |||
48 | Attach steering shaft with universal joint (7) to steering gear (11). | The contact surface for the bolt and nut on the lower universal joint (7) must be free of grease. Pay attention to installation position. | |
Fit bolt/nut, universal/constant velocity joint | |||
49 | Detach anti-twist lock from steering wheel. | ||
50.1 | Turn steering to right. | Left-hand drive vehicle | |
50.2 | Turn the steering to the left. | Right-hand drive vehicle | |
51 | Install drag link (21). | ||
The drag link (22) is not installed until after bleeding. | |||
52 | Attach holder (14) together with oil pressure lines (28, 31, 35, 37), oil return feed lines (32, 33, 34), control line (36), pressure reservoir (39) and proportional valve (17) to steering gear (11). | STEERING GEAR 765.887Bolt, bracket for oil reservoir to steering gear | |
HEMA dual-circuit power steeringBolt, bracket for oil reservoir to steering gear | |||
53 | Remove all stop plugs. | ||
54 | Install new fittings in steering gear (11). | Only when replacing steering gear (11). | |
STEERING GEAR 765.887Elbow fitting, hose connection for return hose to steering gear | |||
HEMA dual-circuit power steeringElbow fitting, hose connection for return hose to steering gear | |||
STEERING GEAR 765.887Oil pressure line fitting to steering gear | |||
HEMA dual-circuit power steeringOil pressure line fitting to steering gear | |||
STEERING GEAR 765.887Fitting for oil return line to steering gear | |||
HEMA dual-circuit power steeringFitting for oil return line to steering gear | |||
55 | Attach oil return feed lines (32, 34) and oil pressure lines (31, 37) to steering gear (11). | Counterhold corresponding fitting on steering gear (11). | |
Union nut, steering gear oil line/hose | |||
56 | Attach proportional valve (17) to holder (14). | ||
57 | Connect electrical connector (26) to oil pressure switch (15). | ||
58 | Install holder for pressure reservoir (39). | ||
59 | Attach oil pressure line for emergency steering pump to oil pressure line (28). | Union nut, steering gear oil line/hose | |
60 | Attach oil pressure line (30) to oil pressure line (31). | Union nut, steering gear oil line/hose | |
61 | Install holder (10) for oil container (12). | STEERING GEAR 765.887Bolt, bracket for oil reservoir to steering gear | |
HEMA dual-circuit power steeringBolt, bracket for oil reservoir to steering gear | |||
62 | Install oil container (12). | ||
63 | Connect electrical connector (23) to fill level sensor (13). | ||
64 | Attach hydraulic lines (A, B, C, D) to steering gear (11). | Counterhold corresponding fitting on steering gear (11). | |
Union nut, steering gear oil line/hose | |||
65 | Attach clamps for hydraulic lines (A, B, C, D) to frame. | ||
66 | Attach holder with solenoid valves. | Only for model 942.3, 943.3 | |
67 | Pour in steering gear oil and vent steering. | ||
Leave vehicle jacked up and do not yet tilt back cab. | |||
68 | Attach boot (6) to steering gear (11). | ||
69 | Install rear support arm for entrance. | Only for model 942.3, 943.3 | |
70 | Install entrance together with front splash guard. |
| |
Model 942.3, 943.3, 950.3, 952.3, 953.3 | |||
71 | Check hydraulic steering limiter, adjust if necessary. | ||
72 | Conduct a road test. | | |
During the road test check the overall steering behavior of the vehicle. | |||
73 | Checking power steering for leaks. | Visual inspection. |
655 589 00 35 00
Puller
964 589 00 40 00
Holding device
963 589 01 91 00
Plug
964 589 02 59 00
Lifting device
964 589 00 09 00
Adapter kit