23PN-52886 (4/97)
1. Bevel gear
2. Gearbox housing
3. Keyed gear shaft
4. 12T Pinion shaft
5. Spacer
6. Gearbox cover
7. Washer, 1.58 x 3.13 x .04
8. Ball bearing 6007
9. Ball bearing 6207
10. Ball bearing 6208
11. Castle nut
12. Washer, 25mm x 44mm x 4mm
13. Key
14. Internal retaining ring 45mm
15. Internal retaining ring 2.9mm x
80mm
16. Internal retaining ring 81mm
17. Internal retaining ring 125mm
18. 3/8 NPT Square head pipe plug
19. Metric seal 40 x 80 x 12
20. Metric seal 35 x 52 x 7
21. O-Ring seal .13 x 4.88 OD
22A. Shim, 40.3mm x 51.5mm
22B. Shim, 69.0mm x 79.9mm
22C. Shim, 35.3mm x 48.0mm
23. 3/16 x 2” Cotter pin
25. 3/8 NPT Vent plug
26. Cap
Figure 18. Gearbox Exploded View
CD4837C
26
22B
18
13
23
22C
22C
16
21
20
19
25
17
22A
15
14
12
11
10
10
9
8
7
6
5
4
3
2
1
Drive Pulley Installation
(Figure 19)
CD4991
5
42
1
3
6
DIM “A”
1. Shim
2. Idler arm
3. Idler pulley
4. Drive pulley
5. Nut and cotter key
6. Gearbox stand
Figure 19. Pulley Alignment
Invert gear stand.
When gear stand is installed on mower, dimension “A”
(from the top of the mower deck to the centerline of
the drive pulley) must be 2-7/16” (plus or minus
1/32”). This is a critical dimension and must be
carefully adjusted for proper belt life. Add or subtract
shim washers under idler pulley to align with drive
pulley.
Tighten gear stand hardware.
Fill gearbox half full of SAE 90W gear lube. Check
level after waiting five minutes to permit lube to work
through bearings and add lube, if necessary, until it is
half full.
Replace driveline shield. Attach driveline to gearbox.
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