Filter
Top Products
PUMP
SERVICE
I
WARN'NG
1
Servicing the Plungers
To reduce the risk Of serious bodily injury,
including
fluid
injection, splashing in the eyes or
NOTE
Plunger repair kit, P/N 803-510 is available
to
replace retainers, O-rings, washers and
on the skin, or injury from moving parts, always
follow the
Pressure
Relief
Procedure
Warning
backup rings for three cylinders.
I
before proceeding.
NOTE:
The following metric wrenches are needed:
using an M10 wrench. Push the plunger towards the
crankcase
to
separate the plunger and retaining
I
1. Loosen the plunger retaining screw five
to
six tums,
-
M10,
M13 ani M30. ReDair kits are available. screw.
..
1.
2.
3.
4.
pump parts page for more details. For the best
Refer
to
the individual repair sections and
the
results, use all parts in the kits.
NOTE
There are
two
different
tool
kits
to
aid in
servicing the pump. P/N 800-298 is used
to
ease installation of packings. P/N 800-271
includes
the
items
in
800-298 and
tools
to
aid
in the removal of packing retainers.
Valves
NOTE
For a
set
of six valves, order P/N 801 -472.
Remove the hex plug from the manifold using an
2. Remove the screw from the plunger and examine
washer. Replace these parts,
if
necessary, using kit
the O-ring, backup ring and copper bearindgasket
803-510.
3. Remove the plunger and flinger from the plunger
shaft. Clean, examine and replace parts as
necessary.
4.
Inspect the plunger shaft for oil leakage from the
crankcase. If leaking is obvious, replace the oil
seals. Otherwise,
DO
NOT
remove these seals as
they cannot be reused.
An
oil seal kit
is
available
to
replace the seals.
M30 wrench.
Examine the O-ring under the hex plug and replace
it if it is cut or distorted.
.-
5.
Lightly grease the oil seal,
if
it is being replaced,
and the flinger and replace them on the plunger
shaft. Then install the plunger.
Remove the valve assembly from the cavity; the
assembly may come apart.
lnslall the newvalve. Install the O-ring and hex plug;
torque
to
75
ft-lb (103 Nm).
6.
Lightly grease the retaining screw and the outer end
of the plunger. Place the washer, O-ring and backup
ring around the screw and install the screw through
the plunger. Torque
to
14.4
ft-lb
(19.5
Nm).
NOTE:
If
vou plan
to
replace the Packinas. refer
to
NOTE
Retorque the plug after 5 hours of operation.
Pumping Section
1. Remove the eight capscrews and lockwashers from
the manifold using an M13 wrench.
2. Carefully separate themanifold
from
the crankcase.
NOTE:
It
may be necessary
to
tap the manifold lightly
with
a
soft
mallei
to
loosen.
Keep
the
manifold properly aligned with the
ceramic plungers when removing
to
avoid
damage to the plunger or seals.
Sitvicing the V-backings.
'
-
7.
Lubricate the outside of each plunger. Slide the
manifold
onto
the crankcase, being careful not
to
damage the seals.
8. Install the capscrews and washers finger-tight.
Torque the screws
to
21.7 ft-lb
(29
Nm) following the
tightening pattem (Figure 4). Uneven tightening
may cause the manifold
to
bind or jam.
I
I
3. Carefully examine each plunger
for
any scoring or
cracking and replace as necessary.
Figure
4
16
308-522