Usage:
Typical Example
Typical Example
(8) Torque for bolts that hold the bevel gear:
D3C (6SL, 7XL) ... 142 ± 14 N·m (105 ± 10 lb ft)
All Others ... 240 ± 40 N·m (175 ± 30 lb ft)
(9) Distance from shoulder on shaft to face of flange after flanges have been pressed on with 133 to 178 kN (15 to 20 ton) force is ... 3.0 ± 0.8 mm (.12 ± .03 in)
(10) Torque for nuts with 5P3413 Thread Sealant on threads of nuts and shaft ... 475 ± 35 N·m (350 ± 26 lb ft)
Preload of Bearings for Bevel Gear Shaft
1. Install bevel gear and shaft in the steering clutch case.
2. Install shims (2) that were removed at disassembly.
3. Install enough shims (3) so there is a small amount of end play in bevel gear shaft (5). Tighten bolts (1) and (4) before checking the end play of bevel gear shaft (5).
4. Measure the end play of bevel gear shaft and remove bolts (4) and enough shims (3) so there is no end play of bevel gear shaft (5).
5. Remove an additional 0.18 mm (.007 in) of shims (3) to get the correct amount of preload for bearings (6) and (7).
6. Install bolts (4) to bearing cages. Tighten bolts (1) and (4) to a torque of 45 ± 7 N·m (33 ± 5 lb ft).
NOTE: A torque of 3.9 to 5.6 N·m (2.88 to 4.13 lb ft) is needed to turn shaft (5) after the correct preload is set.
Adjustment of End Play for Pinion Shaft
Typical Example
To get the correct amount of end play for pinion shaft (11), add or remove shims (12).
End play for shaft ... 0.00 to 0.05 mm (.000 to .002 in)
Free Movement (Backlash)
Typical Example
Typical Example
- 8T5096 Indicator Group.
1. Adjust the preload of the bearings for the bevel gear shaft. See Preload of Bearings for Bevel Gear Shaft.
2. Adjust the pinion shaft end play. See Adjustment of End Play for Pinion Shaft.
3. Install shims (15) and pinion shaft and housing (14).
4. Visually, put the pinion in a position so the heel of the teeth for the pinion shaft is in line with the heel of the teeth for the bevel gear, location (A).
5. Make adjustment of pinion shaft toward or away from bevel gear (13) by adding or removing shims (15).
6. Assemble tools needed from 8T5096 Indicator Group, for checking bevel gear and pinion shaft free movement (backlash).
7. Attach the tools for checking free movement (backlash) to the top of bevel gear case.
8. Hold the pinion shaft so it can not turn.
9. Put the finger of the dial indicator on one of the teeth on bevel gear (13).
10. Move the bevel gear clockwise and then counterclockwise.
11. Read the difference in the measurements on the dial indicator. This is the amount of free movement (backlash).
12. Check the amount of free movement at four different locations on the bevel gear, taking the lowest measurement as the location to check the amount of free movement.
13. If the measurement is too much at the location of the smallest amount of free movement, remove shims (3) from the left side and install the same shims on the right side of the bevel gear [shim (2) position].
14. To get more free movement (backlash), remove shims (2) from the right side and install the same shims on the left side of the bevel gear [shim (3) position].
NOTE: The preload on the bevel gear shaft bearings will not be changed by moving shims from one side to the other if the same total number of shims is kept.
15. Make further checks of the adjustment by putting Prussian blue or red lead on the teeth of the bevel gear. The correct area of tooth contact (B) starts near the toe and goes approximately 30 percent of the length of a bevel gear tooth.
16. Make adjustment to the location of the pinion shaft if tooth contact is more on one side of a tooth or is near the heel of a tooth.
17. Add or remove shims (15) to move the pinion shaft and housing (14).
18. Make adjustment to the free movement (backlash) of the bevel gear.
19. Make another pattern of tooth contact.
20. If necessary, make several adjustments to the pinion and the bevel gear to get correct tooth contact and free movement (backlash).
Free movement (backlash) for bevel gear and pinion shaft:
D3C (6SL, 7XL) ... 0.20 + 0.10 - 0.08 mm (.008 + .004 - .003 in)
All Others ... 0.25 + 0.10 - 0.08 mm (.010 + .004 - .003 in)