Terex TS14G, Maintenance Manual

Page: 226 / 376

Section 235-0035
Bowl Hydraulic System - Apron Cylinder
SM 1896 1-00
2
DISASSEMBLY
Numbers in parentheses refer to Figs. 1 & 2.
WARNING
To prevent personal injury and property
damage, be sure lifting equipment is properly
secured and of adequate capacity to do the job
safely.
1. Ensure clean working conditions, remove any port
plugs thus allowing easy entry of air into the cylinder,
preventing a vacuum when parts are withdrawn from
cylinder body (1).
2. Place cylinder assembly in an upright position,
with piston rod (3) facing up and clamp securely.
3. Remove lock ring (14) from between cylinder body
(1) and end cap (18).
4. Unscrew end cap (18) and pull end cap (18), piston
rod (3) and piston (2) out of cylinder body (1) as an
assembly.
5. Position eye end of piston rod (3) in a soft-jawed
vice and remove locking screw (10).
6. Pull piston (2) assembly off piston rod (3) and
remove and discard piston seal (7) and wear ring (8)
from piston (2).
7. Remove and retain cushion sleeve (6) from piston
rod (3). Remove and discard three 'O' rings (9) from
piston rod (3).
8. Pull end cap (18) assembly off piston rod (3).
Remove and discard backup ring (15), retainer (4)
and 'O' rings (12 & 13) from outer grooves of end cap
(18). Remove and retain circlip (17) and cushion
sleeve (5) from end cap (18). Remove and discard
rod seal (11) and wiper seal (16) from inner grooves
of end cap (18).
INSPECTION
Numbers in parentheses refer to Figs. 1.
1. Clean all parts of the cylinder with a suitable
solvent and dry with clean, lint-free cloths. Clean all
grooves carefully to remove any foreign material.
2. Check cylinder body (1) bore, outer diameter of
piston (2) and end cap (18) for scratches, cracks or
other signs of damage. Remove ridges, nicks and
scratches with a fine stone and re-clean. Replace
any components which cannot be repaired.
3. Inspect piston rod (3) for distortion, cracks or
other defects. Replace piston rod (3) if defective area
is irreparable.
4. Use new oil seals and 'O' rings whenever the
cylinder is disassembled.
5. Discard all scored, deeply scratched or
excessively worn parts and replace with new ones.
ASSEMBLY
Numbers in parentheses refer to Figs. 1.
Note: Tighten all fasteners to standard torques listed
in Section 300-0080, STANDARD BOLT AND NUT
TORQUE SPECIFICATIONS.
Note: To facilitate assembly, lubricate all internal
sliding or wearing surfaces prior to assembly with the
same hydraulic oil that is used in the system.
WARNING
To prevent personal injury and property
damage, be sure lifting equipment is properly
secured and of adequate capacity to do the job
safely.
1. Install new rod seal (11) in bore of end cap (18)
with the lip pointing towards the internal face of the
end cap (18). Install new wiper seal (16) into bore of
end cap (18).
2. Install cushion sleeve (5) and circlip (17) into bore
of end cap (18). See Fig. 1 for proper installation.
3. Install new backup ring (15), new 'O' rings (12 &
13) and retainer (4) on outer groove on end cap (18).
4. Guide end cap (18) assembly onto piston rod (3).
5. Install three new 'O' rings (9) in the external
grooves on piston rod (3). Install cushion sleeve (6)
onto piston rod (3).
6. Install piston seal (7) into external groove on
piston (2).
7. Install piston (2) on piston rod (3) and tighten to a
torque of 1 355 Nm (1 000 lbf ft).
Courtesy of Machine.Market