Hydraulic Comparison Test Pump
Maintenance and Servicing
13
Table 5. Priming Pump Assembly - Parts List
Part
Item Description
P5515 P5515-V
P5515-EP
1 Pivot
Clip
3920224
2 Clevis
3920236
3 Locknut
3918713
4
Pump Union Nut
3921527
5 Shaft
Bearing
3867744
6 Pump
Shaft
3921509
7 Ball
3917855
8 Rambler
3919165
9 Back-Up
Ring
3920516
10 O
Ring
3864782
3922070
3865541
11 Barrel
Locknut
3921438
12 Pump
Barrel
3921511
13 O
Ring
3864711
3865359
3922004
14
Pump Block Assembly
Check Valves
Inlet Check Valve
The inlet check valve is a bought-in item, and is not readily user-serviceable.
To remove:
1.
Disconnect nylon tubing from connector (10), by pressing in the collar at the top of
the connector, and gently pulling on the tubing.
2.
Unscrew and remove connector.
3.
Remove check valve assembly (9).
4.
When replacing the check valve assembly, take care to remove all traces of PTFE or
Teflon sealing tape on the mating threads of elbow (7). New tape (or similar sealing
method) must be applied to ensure a pressure-tight joint.
5.
Reassembly is the reverse of removal.
Outlet Check Valve
6.
Remove screws (7) and lift off flange (6), taking care not to drop the check valve
bullet (4) and spring (5).
7.
Inspect the parts for cleanliness and damage—particularly the sealing surfaces.
8.
When removing O-rings, take care not to use any tool that may have a sharp edge that
will scratch the surfaces of the mating groove, otherwise it may leak when
reassembled.
9.
Reassembly is the reverse of removal, but care mast be taken to ensure that the spring
and bullet are seated correctly.
