Steering Cylinder - Toro Reelmaster 4500–D Service Manual

Steering Cylinder

1. Set Screw
2. Threaded Cap
3. Rod
4. Rod Wiper
5. U–Cup
6. Cap Head
7. Backup Washer
8. O–Ring
9. O–Ring
Steering Cylinder Repair
IMPORTANT: To prevent damage when clamping
cylinder barrel or rod in a vise, clamp only on pivotal
ends.
1. After removing cylinder, pump oil out of cylinder in to
a drain pan by SLOWLY moving rod and piston in and
out of cylinder bore.
2. Plug ports and clean outside of cylinder.
3. Mount cylinder in a vise so piston rod end of cylinder
is tilted up slightly. Do not close vise so firmly that cylin-
der tube could become distorted.
4. Loosen set screw and remove threaded cap.
5. Grasp clevis end of piston rod and use a twisting and
pulling motion to carefully extract piston, piston rod, and
head from cylinder barrel.
Hydraulic System
Figure 86
10. Spacer
11. Servon
12. O–Ring
13. Piston
14. Locknut
15. Barrel Assembly
16. Jam Nut
17. Rod Tie, End
18. Roll Pin
6. Securely mount piston, piston rod, and head into vise
and remove nut.
IMPORTANT:
smooth piston rod surface; the piston rod will be-
come damaged.
7. Remove piston. Slide head off of piston rod.
8. Remove all seals and O–rings.
9. Wash part in a safe solvent. Dry parts with com-
pressed air. DO NOT wipe them dry with a cloth or paper
as lint and dirt may remain.
10. Carefully inspect internal surface of barrel for dam-
age (deep scratches, out–of–round, etc.). Replace en-
tire cylinder if barrel is damaged. Inspect head, piston
rod, and piston for evidence of excessive scoring, pit-
ting, or wear. Replace any damaged parts.
Page 4 – 86
Do not clamp vise jaws against
Reelmaster 4500–D