Service Manual

Rev. A
Pro Sweep 5200 Hydraulic SystemPage 3 -- 25
IMPORTANT: When removing seal components, be
careful not to scratch or damage piston or head.
6. Remove and discard seal kit c omponents from the
head and piston.
Inspection
CAUTION
Use eye protection such as goggles when using
compressed air
1. Wash all parts in solvent. Dry parts with compressed
air.
2. Inspect internal surface of tube for deep scratches,
out--of--roundness and bending. Replace if worn or
damaged.
3. Inspect rod, piston and head for excessive pitting,
scoring or wear. Replace any worn or damaged parts.
Assembly (Fig. 16)
1. Coat new seal kit components with clean hydraulic
oil.
IMPORTANT: When installing seal components, be
careful not to scratch or damage piston or head.
2. Install new seals to the head and piston.
IMPORTANT: Do not clamp v ise jaws against rod
surface. Protect rod surface before mounting in
vise.
3. Mount rod securely in a vise by clamping vise on the
pivot end of the shaft. Carefully slide head assembly and
piston assembly onto the rod.
4. Thread lock nut (item 13) onto rod. Torque lock nut
from 250 to 300 ft--lb (339 to 407 N--m).
5. Remove rod assembly from vise.
IMPORTANT: Prevent damage when clamping the
tube into a vise; clamp on the pivot end only.
6. Mount tube in a vise so that the rod end tilts up slight-
ly.
IMPORTANT: When installing the head into the
tube, pay careful attention to the retaining ring slot
in the tube to insure that the backup ring does not
lodge in the slot.
7. Coat all internal lift cylinder parts with a light coating
of clean hydraulic oil. Slide rod assembly into tube being
careful not to damage the seals.
8. Secure head in tube by installing retaining ring (item
8). Align retaining ring hole in the head with the access
slot in the tube. Insert the retaining ring hook into the
hole and rotate head clockwise until the retaining ring is
completely pulled into the tube and the ends are cov-
ered. Apply silicone sealer to barrel access slot.
Hydraulic
System