Giant P400 Series, Инструкция по эксплуатации / Руководство по ремонту и обслуживанию

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12) After installation of high
pressure seals (23), place
seal case (20) with weep
seals & pressure ring
installed, weep return ring
(25) and high pressure
weep return ring (24) over
plungers. Slide valve casing
over plungers and seat firm-
ly. Replace the 8 socket
head cap screws (34) and
tighten to 30 ft.-lbs.(40 Nm)
in a crossing pattern (as
shown at right).
9) Check surfaces of plunger
(16). Damaged surfaces
cause accelerated seal
wear. Deposits of all kinds
must be removed from the
plungers.
IMPORTANT!
Plunger surfaces are not
to be damaged. If there
are lime deposits in the
pump, care must be taken
that the drip-return bore in
parts (25) and (26) ensure
trouble-free drip-return.
Torque Specifications
P420 / P420-0011 / P420-0021 / P422 / P423 and P425
Position Item# Description Lubrication U.S Metric
3A 07186 Oil Sight Glass Loctite 5910 106 in.-lbs. 12 Nm
5 07109 Oil Drain Plug 59 ft.-lbs. 80 Nm
5B 08092 Plug with Gasket 59 ft.-lbs. 80 Nm
6 01010 Screw 111 in.-lbs. 12.5 Nm
10 07114 Screw with Washer 133 in.-lbs. 15 Nm
15B 05349 Connecting Rod Screw 97 in.-lbs. 11 Nm
16D 08399 Tensioning Screw Loctite 243 20.7 ft.-lbs. 28 Nm
32 08373 Plug Loctite 243 107 ft.-lbs. 145 Nm
34 08396 Cap Screw Lightly Oil 30 ft.-lbs. 40 Nm
Repair Instructions P420 / P420-0011 / P420-0021 / P422 / P423 and P425
11) If oil leaks under under the
plunger (16), the oil seals
(19) need to be replaced.
Remove oil plug (5) and
drain oil. With the valve cas-
ing (26) and seal case (20)
removed (ref. instructions
#5 & 6), and plunger disas-
sembled (ref. #10), carefully
pry out the oil seal with a flat
screwdriver and replace it
with a new one. Make sure
that the oil seal groove faces
inward towards the oil.
NOTE:
Be careful not to
score the crankcase guides
where the oil seal sits and
where the plunger base
(16A) moves through the
crankcase (1).
10) If the plunger pipe (16B), is
damaged or worn, remove
tension screw (16D) and
plunger pipe (16B). Check
and clean plunger surface
(16A) and check flinger
(16H). Cover thread of ten-
sion screw (16D) with a thin
film of Loctite and tighten
carefully to 20.7 ft.-lbs.
(28 Nm).
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