John Deere stx38 - Manual (Page 221)

3/20/97
5 - 57
POWER TRAIN REPAIR
TRANSAXLE—REMOVAL/
INSTALLATION
STX38 (SN 210001— ) & STX46
IMPORTANT: STX38 (SN 301383— ) transaxle
differs slightly from STX38 (SN 210001—301382)
and STX46 transaxle.
1. Raise and block tractor off surface.
2. Remove drive wheels.
3. Disconnect shift linkage (B) from shift arm (C).
4. Remove traction drive belt (A).
5. Disconnect clutch/brake rod return spring (D).
6. Disconnect clutch/brake rod (E).
7. Support transaxle with jack stands or have a helper
hold transaxle in place while you remove
hardware.
8. Remove front cap screws (F) and rear hardware
(G).
9. Carefully remove transaxle to workbench.
10. Install transaxle in reverse order of removal.
11. Tighten mounting hardware.
Front Hanger cap screws to frame . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 27.1—54.2 N•m (240—480 lb-in.)
Front transaxle cap screws to hangers . . . . . . . . . .
. . . . . . . . . . . . . . . . 21.7—32.5 N•m (192—288 lb-in.)
Rear axle cap screws and nuts to frame . . . . . . . . .
. . . . . . . . . . . . . . . . 20.3—47.4 N•m (180—420 lb-in.)
Shift linkage lock nut . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 13.5—17.6 N•m (120—156 lb-in.)
NOTE: Replacement transaxle will not have tapped
holes for front hanger brackets. Reuse original
self tapping cap screws and torque to 32.5
N•m (288 lb-in.).
12. Install traction drive belt (C).
13. Install drive wheels.
14. Lower tractor to surface.
TRANSAXLE—DISASSEMBLY
STX38 (SN 210001— ) & STX46
IMPORTANT: Pay close attention to the order and
orientation of all components to their neighbor
components. Mark them, if necessary. This will
help greatly when its assembly time.
Remove Drive Sheave/Shift Arm:
1. Remove drive sheave snap ring (C).
2. Remove drive sheave (B).
3. Remove shift arm (A). Be sure when installing that
special square hole washer and shift arm are
seated properly over square end of shifter shaft.
B
C
M42590
A
D
E
M42536
F
G
M42534
M55825
C
A
B