Disassembly
Disassembly1) Remove 4WD switch (3) and take out steel ball.
2) Remove 5 bolts and then remove gear shift lever case (4).
3) For transfer for A/T and manual transmission type 1 model, after removing bolt of select return system, take out spring (4), steel ball (5) and pin (6).
For transfer for manual transmission type 2, remove select return spring bolt (1) and then return spring (2).
4) By hammering special tool, drive spring pin out of reduction shift yoke.
NOTE:
^ Pin may drop into case when driven out. Therefore, take it out when case is disassembled.
^ After spring pin is removed, yoke may be either taken out.
5) Remove 15 rear case bolts and then separate case by using special tool.
NOTE: To separate center case (1) and rear case (2), use special tool at 4 points in turn and make opening wider evenly.
6) Remove circlip (1) from output rear shaft (2) by using screwdrivers and hammer, then pull out speedometer drive gear (3) and steel ball.
7) Remove circlip for bearing and pull out bearing No. 2 (1) by combination of special tools.
8) Remove synchronizer plate screws (2) and pull out sprocket bush (4) and needle bearing (3) from output rear shaft (5).
9) Remove sprocket (6) with drive chain (7) and synchronizer plate (1).
NOTE: Watch out for steel ball which comes off from shaft when bush is pulled out so as not to lose it.
10) Remove counter shaft plate bolt (1) from front case (3), and counter shaft plate will come off.
11) Remove front case (3) by removing its 9 bolts (2).
12) Remove input gear needle bearing (1). Remove counter gear shaft (3) together with needle bearings, spacer, washers (4) and steel balls (5) from case.
NOTE:
^ Watch out for steel balls (5) which come out from between shaft (3) and washers (front and rear) (4) so as not to lose them.
^ Check friction ring lip for damage and wear. Replace if necessary.
^ Neither O-ring nor friction ring should be removed unless absolutely necessary. If removed, use new parts for reinstallation. Removed ones should not be reused.
13) Remove O-ring from counter gear shaft (2) and then remove friction ring (3) from shaft, using a proper size rod (1) and press.
14) Remove locating spring bolt (1) with washer (2), spring (3) and ball (4) for reduction shift. Remove rubber plug (5) as well.
15) Pull out reduction shift shaft (6) together with fork (7) and sleeve (8).
NOTE: For this removal, be sure to place front drive fork shaft at 4WD position.
16) Remove locating spring bolt (1) with washer (2), spring (3) and ball (4) for front drive shift.
17) Pull out front drive shift fork (6) and shaft (5), sleeve (7) and hub (8) all together.
NOTE: Watch out for interlock steel ball which comes out from between 2 shift shafts so as not to lose it. If it doesn't come out, remove rubber plug and take it out.
18) Using plastic hammer (2), drive out output rear shaft assembly (1) with bearing. Output low gear and reduction clutch hub also come off as they are installed to shaft.
19) Pull off circlip from output rear shaft and remove reduction clutch hub (1) by using puller (2) and press. Then pull out output low gear and needle bearing.
20) Using puller (3) and press, remove bearing No. 1 (2) from shaft (1).
21) Remove oil seal from center case (1).
22) Using plastic hammer, drive out output front shaft (2) together with bearings.
CAUTION: If oil seal remains in center case, be careful not to damage oil seal by hitting. Use drive punch for hammering.
23) Take off bearings (1, 3) from shaft by using press and puller (2). Removal of front side bearing requires special tool additionally as shown in figure.
24) To remove needle bearing (2) from center case (1), combine special tools as shown in figure and press them.
25) Remove oil seal from rear case (1). And then, using same special tools and press as in above step, remove needle bearing (2) from rear case.
CAUTION: Be careful not to damage oil seal, if it remains in rear case.
26) Using special tool, remove circlip (3) of input gear (1) from front case (2).
NOTE: Be sure to use right tool to ensure proper work.
27) Using plastic hammer, drive input gear (2) out of front case (1).
NOTE:
^ Be careful not to damage oil seal (3) by hitting.
^ If removed, do not reuse oil seal.
28) Remove circlip (2) of input gear (1) by using special tool.
29) Remove bearing (2) from input gear (1) by using puller (3) and press.
NOTE: Use metal pad for this removal, or gear spline may get damaged.
30) With spring (3) on front drive fork shaft (4) compressed, remove circlip (1) and then remove fork (2) and spring (3).
31) Remove center case gutter (1) from center case (2) with using wrench.