Giant P435, Инструкция по эксплуатации / Руководство по ремонту и обслуживанию

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7
REPAIR INSTRUCTIONS - P435 / P455B
Note: Always take time to lubricate all metal and nonmetal parts with a light film of oil before reassembly. This step will
ensure proper fit, at the same time protecting the pump nonmetal parts (i.e., the elastomers) from cutting and scoring.
1) With a socket wrench,
remove the three discharge
valve plugs and three inlet
valve plugs (32). Inspect
the o-ring (33) for wear and
replace if damaged.
2) Using needle nose pliers, re-
move the inlet and discharge
valve assemblies (27A).
Note:It may become nec-
cesary to remove the valve
seat (27) from the valve cas -
ing using a slidehammer.
3) By inserting a small
screwdriver between
the valve seat (27) and
the valve spring retainer
(30), the valve assembly
can be separated.
4) Remove the o-ring (31).
Inspect all parts for wear
and replace as necessary.
Apply one drop of loctite
243 to the valve plugs (32)
and tighten to 125 ft. lbs.
(170 Nm).
5) Use a 8mm allen wrench
to remove the 8 socket
head cap screws (34).
Carefully slide the valve
casing (26) out over the
plungers.
6) Remove seal adaptors (20)
and weep return rings (25)
from the valve casing.
7) Remove the pressure
rings (24) and v-sleeves
(23) from the valve cas -
ing (26).
8) Remove the weep
grooved seal (23) out of
the seal adaptor (20).
Check O-rings (21).
IMPORTANT! The grooved
seal (23) on the high-
pressure side is to be fitted
carefully into the valve cas-
ing (26) using a screwdriver.
Under no circumstances
must the seal surface in the
valve casing or the seal lip
be damaged.