OM-05724
JD Series
PAGE E - 17
MAINTENANCE AND REPAIR
10.Disassemble the seal housing (257) and bear
ing housing (213), and find and correct the
cause of the leak.
11.Re‐run the test after corrective action has been
taken.
Test 2: Lower Seal Integrity
1. Install air hoses as in Test 1.
2. Submerge the pump in water and apply 14-15
psi maximum to the
seal housing
air hose.
Check for air bubbles.
3. If air bubbles appear, the seal is leaking. Disas
semble the seal housing (257) and find and cor
rect the cause of the leak.
4. Re‐run the test after corrective action has been
taken.
5. After the seals have been tested, remove the air
hoses. Lubricate the seal as indicated in
LU
BRICATION
. Install and tighten the plugs and
O‐rings (268 and 269) in the motor housing
(302) and seal housing (257).
LUBRICATION
All references are to FIGURE E-2.
The seal assemblies (218 and 260) are lubricated
by a reservoir of oil in the seal housing (257). No
other general lubrication is required.
The screw plug (268) in the
motor housing
is used for testing
only;
do not
add oil
through this plug.
Before installing or removing the drain/fill plugs
(268), always clean the area around the plugs to
prevent contamination of the oil.
Discard the plug O‐rings (269) if the plugs are re
moved. Lubricate the new O‐rings with oil
(not
grease)
before installing them
.
Draining Oil
1. Lay the pump flat on a work surface with one of
the two drain/fill plugs (268) in the seal housing
facing up.
2. Slowly open the upper plug to release any pres
sure in the seal housing (257).
3. Place a clean container under the lower plug,
remove the plug, and roll the pump on its side to
drain the seal housing.
Condition Of Oil
1. Check the condition of the oil drained from the
pump.
2. If the oil is clear, it can be reused.
3. If the oil is milky or contains a small amount of
water, it must be changed.
4. If the oil contains a large amount of water, it
must be changed, and the lower seal assembly
(260) must be checked before the pump is put
back in operation.
Adding Oil
1. Lay the pump flat on a work surface with one of
the two drain/fill plugs (268) facing up.
2. Slowly open the upper plug to release any pres
sure in the seal housing.
3. Remove both fill/drain plugs (268), and through
the top plug hole add SAE 10W 30 motor oil until
it escapes from the lower plug hole.
4. Lubricate and install new O‐rings (269), and in
stall and tighten the plugs (268).
