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Pump
(Refer to Parts Drawing, 'Page
9)
NOTE:
Two sizes of metric wrenchesare necessary
for servicing the pump; M13 and M30.
Valves:
1.
Remove the hex plug (5)from manifold (6) using
M30
wrench.
2. Examine O-ring
(4)
under plug.and replace if cuts or
distortion exist.
3.
Remove valve unit and O-ring (3) from cavity
NOTE:
Valve unit
maycomeapartduringremoval.
4.
Replace valve unit with P/N 801 -472
5. Replace hex plug and torque
to
75ft.
Ibs. (1 0.3 K/m).
NOTE:
Hex plug should be re-torqued. after 5
hours operation.
..
Pumping Section:
1.
Remove the eight cap screws
(I)
from the manifold
using the M13 wrench.
2.
Carefully separate the manifold from the crankcase.
NOTE:
It
may be necessary
to
tap manifold lightly
with mallet to loosen.
nlungers or seals.
plungers when removing
to
avoid damage to
3.
Carefully examine each plunger (16) for any scoring
and replace if necessary.
Servicing Plungers:
1. Loosen plunger retaining screw(l2)5-6turns, using
"10
wrench. Push plunger towards crankcase.
Ttiis will separate plunger and retaining screw.
2. Remove retaining screw from plunger and examine
O-ring (18). back-up ring (17). and copper
bearing/gasket washer (13). Replace if necessary
using plunger repair kit
P/N
801
-474.
3.
Remove plunger from plunger
rod
and remove
copper flinger (1 5). Clean or replace if necessary.
4.
Lightly grease flinger and replace
it
on plunger rod.
5.
Replace plunger
6. Lightly grease retaining screw assembly
to
avoid
cutting O-ring. Lightly grease outer end of plunger.
7.
Install retaining screw assembly into plunger and
torque to
14.4
ft. Ibs.
(2
K/m).
8. Lubricate each plunger and carefully slide manifold
onto crankcase.
9. Replace the eight capscrews and snug them up.
Torque to 21.7
ft.
Ibs.
(3
K/m).
NOTE:
The eight capscrews must be torqued
evenly to apply equal pressure on the
manifold
so
that
it
seats properly and
doesn't bind or jam. This is best done by
torquing bolts closest to the center of the
manifoid first and then working
out
from
those bolts.
Servicing V-Packings:
NOTE:
Use packing repair kit P/N 801 -486
1.
After removing the eight capscrews .and the
manifold carefully pull packing retainer(l9)from the
manifold. Examine O-ring
(10)
and replace if
necessary.
2.
Remove low pressure packing
(8)
and head ring
(7).
3.
Pull
intermediate retainer ring
(20)
from manifold.
Remove long life ring
(9).
high pressure packing (8)
and
head ring
(7).
4.
Inspect all parts and replace if necessary
NOTE:
If
just
the packings are needed use kit801
-
486. If rings or retainers need replacement
use kit 801 -487.
5. Thoroughly clean packing cavity
in
manifold and
examine. Lightly grease packing cavity.
6.
Replace packing assembly
in
the following order:
head ring
(7).
packing
(8).
long life ring
(9).
packing retainer
(1
9).
and O-ring (10).
intermediate ring
(20).
head ring
(7).
packing (8).
CAUTION
Carefully study the location of each part and the
and operation.
position of the seals to assure proper reassembly
7.
Lubricate each plunger and carefully slide manifold
onto crankcase:
NOTE:
When replacing the manifold onto
exercised to avoid damage to the seals.
plungers, extreme caution should be
8.
Replace the eight capscrews
in
the manifold and
tighten as previously described (step
9
under
servicing plungers).
8
801-643