OM-07186
PAH SERIES
MAINTENANCE & REPAIR
PAGE E - 25
bar. Proper adjustment is achieved when the ori
fice button fully seats against the orifice before the
linkage bar on the float bottoms against the
threads on the orifice button. When adjustment is
complete, install and tighten the lock washer and
hex nut securing the orifice button.
Install the strainer (6) and priming valve gasket (4).
Lower the float into the priming chamber (5) and
secure the priming valve with the previously re
moved hardware (2 and 3).
(Figure 6)
Install the baffle and gasket (7 and 8) and use a
sling and suitable lifting device to position the prim
ing chamber assembly on the pump suction spool
(26, Figure 4). Secure the priming chamber as
sembly with the hardware (4 and 5).
Reconnect both the suction piping and the air dis
charge tubing to the priming chamber assembly.
LUBRICATION
Seal Assembly
(Figure 5)
Before starting the pump, remove the air vent and
reducer bushing (14 and 12) and fill the seal cavity
with approximately 220 ounces (6,5 liters) of SAE
No. 30 non‐detergent oil to the middle of the sight
gauges (13)
and maintain it at the middle of the
gauges. Clean and reinstall the air vent and bush
ing. Maintain the oil at this level.
Bearings
(Figure 5)
The pedestal was fully lubricated when shipped
from the factory. The grease fittings (20) are pro
tected from contamination by the cap plugs (21).
Remove the cap plugs and clean the grease fittings
thoroughly
before adding grease. After lubricat
ing the bearings, clean the fittings and reinstall the
cap plugs.
Under normal conditions, re‐lubricate the bearings
after every 1500 hours of use by adding 1 oz. (28
g.) of lithium EP2 grease to the impeller end bear
ing and 2 oz. (56 g.) of grease to the drive end bear
ing.
Do not
over‐lubricate. Over‐lubrication can
cause the bearings to over‐heat, resulting in pre
mature bearing failure.
When lubricating a
new
bearing pedestal, pack the
bearings by hand with lithium EP2 grease until fully
lubricated prior to installing the shaft and bearings
into the pedestal. After installing the shaft and
bearings into the pedestal, lubricate the bearings
as follows:
Impeller End Bearing: 6 oz. (170 g) each fitting
Drive End Bearing: 11 oz. (312 g) each fitting
Engine
Consult the literature supplied with the engine, or
contact your local engine representative.
