Titan ProMark 98:2 Série Mode D'emploi page 37

ProMark
fIgure 23
9. Remove the piston rod assembly from the motor/pump
block (31).
10. Remove rod seal (30), being extremely careful not to
scratch the seal groove in the motor/pump block (31).
11. Place the piston retainer screw (14) on the piston rod
assembly in a vise. Slide a long bar through the hole at
the base of the piston rod for leverage, and unthread the
piston rod from the piston retainer screw.
12. Remove piston (19) and lift out valve rod assembly (18).
13. Remove piston seal (16) and o-ring (17).
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)
1
4. Replace rod seal (30) in motor/pump block (31). Be sure
2
5. Place piston rod (19) in vise. Inspect valve rod assembly
6. Install piston seal (16) with lips facing downward. Carefully
7. With motor/pump block (31) still in vise, install rod seal
8. Pre-lubricate the piston and valve rod assembly with
i
9. Replace the connecting rod pin and retainer ring.
10. Install o-ring (9) on cylinder wall. Lubricate ring and inner
11. Raise piston rod (19) to top position and thread lock ring
12. Pull valve rod assembly (18) up as far as it will travel and
into cylinder head (8), which will hold valve sleeve in place.
Install o-ring (9) in the o-ring groove of the cylinder head.
the open portion of the seal is facing upward (V). This seal
requires no special tool.
(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.
install o-ring (17). Expand the ring and stretch it sufficiently
for installation.
(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.
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
sharp areas that could damage the piston seal
during installation through the motor/pump
block (31).
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).
(28) all the way up on upper threads of cylinder (29).
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 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.
maintenance
37