Titan PT6900 Plus DI 120V Mode D'emploi page 25

14. Remove trip retainers (4), trip springs (6), and balls (7) from
cylinder head (8). Remove o-rings (5) from trip retainers.
15. Remove retaining ring (13) and sleeve retainer (12). Gently tap
spool/sleeve set (10) out of cylinder head (8) using a wood or
nylon rod.
16. Inspect piston rod (19) and cylinder (29) for wear, scratches,
and dents. Replace if damaged.
17. Inspect spool valve (10) for wear. Replace if necessary. spool
valve should move smoothly and freely with no force by
holding in a vertical position. If it does not, it can cause the
motor to stall.
Reassembling the Hydraulic Motor
1. Separate spool/sleeve set (10). Place o-rings (11) onto sleeve.
Lubricate o-rings with hydraulic oil. Gently push the sleeve
into cylinder head (8) with the flatter side of the sleeve facing
out. Use a nylon rod to tap sleeve down until it reaches its full
depth. Do not use any other type of tool that might damage
or leave particles or residue on the sleeve. Install the spool
through the top of the cylinder head, down into the sleeve.
Do not use Piston Lube pump packing lubricant. It is
a solvent and will severely damage seals and O-Rings
of the hydraulic motor.
Attention
2. Install o-rings (5) on trip retainers (4). Install trip retainer balls
(7) followed by springs (6) which, when installed, will hold
spool/sleeve set (10) in proper place for assembly.
3. Install sleeve retainer (12) followed by retainer ring (13) into
cylinder head (8), which will hold valve sleeve in place. Install
o-ring (9) in the o-ring groove of the cylinder head.
4. Replace rod seal (30) in motor/pump block (31). Be sure the
open portion of the seal is facing upward (V). This seal requires
no special tool.
5. Place piston rod (19) in vise. Inspect valve rod assembly (18)
for any damage. Make sure the lock nut at the bottom of the
valve rod assembly is secure. DO NOT remove. Then, place into
piston rod as illustrated. Install o-ring (17), lubricating it well
and replacing piston (15) onto piston rod (19). Put one drop of
blue Loctite on the piston retainer screw (14). Tighten piston
retainer screw until piston is locked into place. Check valve rod
assembly for normal spring action at this time.
6. Install piston seal (16) with lips facing downward. Carefully
install o-ring (17). Expand the ring and stretch it sufficiently for
installation.
7. With motor/pump block (31) still in vise, install rod seal (30)
by pushing it towards its groove with a properly sized blunt
rod. Then complete installation with the fingers. No tool is
necessary. Do not twist the seal.
8. Pre-lubricate the piston and valve rod assembly with Coolflo™
hydraulic fluid (P/N 430-361). Install piston rod (19) into
motor/pump block (31) with a gently pushing and rotating
motion to work the piston rod in through the rod seal (30).
Inspect the bottom of piston rod (19) for nicks or
i
sharp areas that could damage the piston seal during
installation through the motor/pump block (31).
9. Replace the connecting rod pin and retainer ring.
10. Install o-ring (9) on cylinder wall. Lubricate ring and inner wall.
With the piston rod held firmly, the cylinder should be gently
driven over the piston seal with a rubber mallet. Tightly thread
the cylinder into motor/pump block (31).
11. Raise piston rod (19) to top position and thread lock ring (28)
all the way up on upper threads of cylinder (29).
12. Pull valve rod assembly (18) up as far as it will travel and grasp
it with vise grip pliers. Then install cylinder head (8), already
assembled, over valve rod until the top threads of the valve
rod pass through the top of the spool/sleeve set (10). The
PowrTwin Plus DI
GB
valve rod threads must be clean and free of oil. Place one drop
of blue Loctite on threads of flex lock nut (3) and thread nut
onto valve rod to full tight position (do not over-tighten) while
holding valve rod below with vise grip pliers.
13. Thread cylinder head (8) down onto the cylinder (29) and
then back off just enough to reassemble hydraulic fittings and
motor tube (23). Tighten lock ring with spanner wrench to
hold cylinder head in position.
14. Install o-ring (2) onto cylinder head plug (1). Tighten.
Hydraulic Motor Cut-Away
Torque ex locknut to
40 in.-lbs. (4.5 Nm).
Use blue Loctite.
Use blue
Loctite on
lock ring.
Seal lip must
face up.
Use
hydraulic
sealant.
23
Maintenance
Torque head plug to
15 ft.-lbs. (22 Nm).
Do not over-tighten
o-ring seal.
Torque trip
retainers to
8 ft.-lbs. (10.8 Nm).
Do not over-tighten
o-ring seal.
Torque piston
retainers to
40 ft.-lbs. (55 Nm).
Use red Loctite.
Seal lip must
face down.
Valve rod assembly
is factory set and
permanently Loctited.
Do not disassemble.