40
Pivoting the Cutting Unit Down into the
Operating Position
1. Sit on seat, start the engine, and slowly lower the
cutting units to the ground; then raise center cutting unit
slightly, so rear deck straps can be mounted to lift arm
brackets. Stop engine after cutting unit is raised. Set
parking brake.
2. Line up holes in yoke and input shaft of gear box. Slide
yoke onto shaft and secure together with socket head
screws. Torque screws to 20–25 ft.-lb. (27–34 N⋅m).
3. Secure rear deck straps to height-of-cut brackets on
deck with hair pin cotters and height-of-cut pins. Start
engine and lower center cutting unit completely to floor.
Ensure all lift levers are in the float position and stop
engine.
4. Connect wire harness and the 3 hydraulic lines couplers
at rear of deck.
Removing the Cutting Unit
1. Lower center and wing cutting units to the ground; then
raise center cutting unit slightly, until rear deck straps
hang freely on lift arm brackets. Stop engine after
cutting unit is raised. Set parking brake.
2. Remove hairpin cotters and height-of-cut pins securing
rear deck straps to height-of-cut brackets on deck. Start
engine and lower center cutting unit completely to floor.
Stop engine after cutting unit is lowered.
3. Disconnect the 3 hydraulic lines (quick couplers) and
wire harness at rear of deck.
4. Remove socket head screws securing drive shaft yoke
to gear box input shaft. Slide yoke off shaft.
5. Remove the 4 capscrews, flat washers, and flange nuts
securing ball joint mounts to castor arms on cutting unit
(Fig. 66).
1
3
4
2
Figure 66
1. Push arm
2. Castor arm
3. Ball joint mount
4. Capscrews and washers
6. Roll the cutting unit away from the traction unit.
Alternate Method
1. Lower center and wing cutting units to the ground, set
parking brake and stop engine.
2. Disconnect the 3 hydraulic lines (quick couplers) and
wire harness at rear of deck.
3. Remove socket head screws securing drive shaft yoke
to gear box input shaft. Slide yoke off shaft.
4. Remove the 2 capscrews and locknuts securing cutting
unit carrier frames to traction unit lift arms (Fig. 67).
2
1
Figure 67
1. Cutting unit carrier frames 2. Traction unit lift arms
5. Slowly back traction unit away from cutting unit.
Installing the Cutting Unit
1. With cutting unit on a level surface, move traction unit
into position, aligning drive shaft yoke with gear box
input shaft and lift arm ball joints with mounting holes
in castor arms. Shut engine off.
2. Secure ball joint mounts to castor arms with capscrews,
flatwashers and flangenuts. Tighten capscrews and
flangenuts to 100–110 ft.-lb. (136–150 N⋅m).
3. Line up holes in yoke and input shaft of gear box. Slide
yoke onto shaft and secure together with socket head
screws. Torque screws to 20–25 ft.-lb. (27–34 N⋅m).
4. Start engine, raise center cutting unit slightly, so rear
deck straps can be mounted on lift arm brackets. Stop
engine after cutting unit is raised.
5. Secure rear deck straps to height-of-cut brackets on
deck with hairpin cotters and height-of-cut pins. Start
engine and lower center cutting unit completely to floor.
Ensure all lift levers are in the float position and stop
engine.
6. Connect wire harness and the 3 hydraulic lines couplers
at rear of deck.
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