Toro Groundsmaster 4000-D Service Manual page 303

Rear Arm Removal (Fig. 9)
1. Park machine on a level surface, lower cutting
decks, stop engine, apply parking brake and remove
key from the ignition switch.
2. Remove hair pin (item 6) and clevis pin (item 5) that
connect damper link to cutting deck.
3. Remove cap screw (item 3) and lock nut (item 4) that
secures rod end of rear arm to cutting deck. Locate and
remove spacer from each side of rod end.
4. Remove lock nut (item 25) and lock washer (item 24)
that secures rear arm pivot shaft. Slide pivot shaft from
hub and rear arm. Remove rear arm assembly from ma-
chine.
Rear Arm Disassembly (Fig. 9)
1. Disassemble rear arm assembly using Figure 9 as a
guide.
Rear Arm Assembly (Fig. 9)
1. Slide large flat washer, spring, plastic bearing, sec-
ond large flat washer and small flat washer onto spring
shaft. Thread one jam nut onto shaft and tighten so that
spring is compressed to a length of 7.690" (195.3 mm).
2. Slide the straight bushing and plate onto spring
shaft.
3. Insert assembly into rear arm housing.
4. Secure plate to rear arm housing with two (2) cap
screws and lock nuts.
IMPORTANT: All free play must be removed from
assembly to allow proper operation and ensure long
life.
5. Grasp end of spring shaft. Push inward and pull out-
ward on shaft to determine free play in assembly.
Loosen jam nut, 1/2 turn at a time, until there is no free
play in spring assembly.
6. Remove two (2) cap screws and nuts securing plate
to rear arm housing. Remove spring shaft assembly
from housing.
7. Thread remaining jam nut onto end of spring shaft
and, while retaining inner jam nut to prevent it from mov-
ing, torque outer jam nut from 22 to 28 ft- -lb (30 to 37
N- -m) to lock adjustment.
8. Thoroughly pack spring with grease. Install spring
shaft assembly into housing and secure plate with four
(4) cap screws and lock nuts.
9. Thread rod end (item 8) with jam nut (item 9) into end
of spring shaft. Do not tighten jam nut at this time.
Groundsmaster 4000--D/4010--D
10.If rod ends (item 31) were removed from damper
(item 30), apply Loctite #271 (or equivalent) to damper
shaft threads before installing rod ends. Secure damper
to bellcrank and rear arm with cap screws and lock nuts.
11. If damper link was disassembled, adjust the length
of the link from 5.295" to 5.445" (134.5 to 138.3 mm)
(Fig. 11).
12.If damper springs (item 37) were removed, tighten
lock nuts so that bushings (item 36) are free to rotate.
1. Lift arm (RH shown)
2. Rear arm
1
2
3
2
1
1. Rod end (2 used)
2. Jam nut (2 used)
Page 7 - - 11
2
3
Figure 10
3. Damper
5.295" to 5.445"
(134.5 to 138.3 mm)
Figure 11
3. Link tube
Chassis
1