Instructions
3A1494D
9
Repair Kits
All Repairs:
•
Unless otherwise stated, entirely disassemble pump
as described in the pump disassembly instruction
section of this manual.
•
Properly discard all replaced parts according to
local and state regulations for disposal of discarded
components.
•
Always use all new parts included in the kit to
replace the identical part on the pump.
•
Grease all parts prior to reassembly with a thin coat
of lightweight grease.
•
Reassemble pump as described in the reassembly
instructions, page 6.
Throat and Piston Seal Replacement Kit -
24H853 (
Fig. 19
)
NOTE:
When servicing the throat and piston seals, it is
recommended to also replace seals in the pump lower.
Order repair kit: 24K293 for 3:1 pumps or 24H855 for
5:1 pumps.
Replacement parts for o-ring (5) installed on air piston
(21), o-rings and u-cup seal (6, 7, 9, and 17) installed in
bottom cover (26), o-ring (8) installed on flange (29) and
gasket (25) used later in reassembly of the air valve
(38).
O-ring (55) is installed between the air piston (21) and
displacement rod (30).
1. Use a pick to remove the o-ring (5) installed around
the circumference of the air piston (21) (Fig. 20).
Grease the new o-ring included in the kit and install
it around the air piston.
2. Use a pick to remove o-rings (6, 7), bearing (22) and
u-cup seal (9) from the bottom cover. (Fig. 21).
Grease and replace the o-rings and u-cup seal with
the new parts included in the kit and install them in
the order shown in Fig. 21.
Ref. Description
Qty
.
5
O-RING, air piston
1
6
O-RING
1
7
O-RING
1
8
O-RING, wiper
1
9
SEAL, u-cup
1
10
PIN, spring
1
17
O-RING
3
25
GASKET, cover, small
2
55
O-RING 1
Fig. 19
Fig. 20
7
17
6
5
25
8
9
55
10
5
21
