d. Install new preformed packings (31) and
back-up rings (32) on both sides of spool.
Retain on clevis end of spool with retainer
cleaning solvent, get fresh air
plate (29) and screws (28).
immediately and get medical aid. If
contact with eyes is made, wash your
e. Install retainer plate (29), spring guides
eyes with water and get medical aid
(34) and spring (35). Secure with stripper
Compressed air used for cleaning
purposes will not exceed 30 psi. Use
f. Install valve cap (37) and screws (38).
only with effective chip guarding and
3. REASSEMBLE RELIEF VALVE (5).
(goggles/ shield, gloves, etc.).
a. Install new preformed packing (6) and
1. CLEAN PARTS IN SOLVENT P-D-680 AND
back-up ring (7) into cartridge (8).
BLOW DRY WITH COMPRESSED AIR.
b. Install poppet (11) and retainer (10) into
1. INSPECT SPOOL BORE FOR CRACKS,
c. Install new floating seal (12) and check
PITTING SCORING AND WEAR. REPLACE IF
valve snubber (13).
d. Install new preformed packing (14) and
2. INSPECT SPOOL FOR SCORING AND WEAR.
back-up ring (15) on plunger (16).
REPLACE IF NECESSARY.
e. Install plunger (16), spring (17), adjusting
screw (19) with new preformed packing
(18) into cartridge (8). Secure with locknut
Install new packings and seals on or
f. Install washer (9) and new preformed
in all component parts.
packing (18) on relief valve cartridge (8).
packings and seals with clean
Install relief valve (5) into inlet section (4).
hydraulic fluid prior to assembly.
4. POSITION SECTIONS TOGETHER WITH NEW
1. REMOVE ANY BURRS FROM FACES OF
PREFORMED PACKINGS (21) AND (22).
VALVE SECTIONS AND ENSURE ALL MATING
SECURE ASSEMBLY WITH TIE BOLTS (2).
SURFACES ARE CLEAN.
2. REASSEMBLE VALVE SECTION (33).
Do not torque tie bolts at this time.
a. Install new packings onto plugs (40).
5. INSTALL CIRCUIT RELIEF VALVES
b. Install poppet (27), spring (26), new
APPLICABLE IN THEIR HOUSING.
preformed packing (25) and check cap
c. Install spool (30).