Graco 236462, Инструкция по эксплуатации

Страница: 15 / 30

Repair
308352E 15
Disassemble the Displacement
Pump
When disassembling the pump, lay out removed parts in
sequence to ease reassembly. Clean all parts with a
compatible solvent and inspect them for wear or
damage. Refer to F
IG
. 7, page 16, for a cutaway view of
the pump.
NOTE: Repair Kit 222866 is available to replace the
packings and seals. Parts included are denoted with an
asterisk (*). For the best results, use all the new parts in
the kit. See
Parts , page 22.
1. Follow the Disconnect the Displacement Pump
procedure, page 13.
2. Place the pump in a vise, with the outlet housing (9)
positioned as shown in F
IG
. 6.
3. Hold the flats of the priming piston rod (18) with an
adjustable wrench. Use a second wrench to
unscrew the priming piston seat (22) from the rod.
Slide the priming piston (21) off the rod. Inspect the
inner and outer surfaces of the piston (21) for
scoring, wear, or other damage.
4. Loosen the packing nut (2) using the wrench (109)
supplied.
5. Use a pipe wrench to unscrew the hex (19)of the
intake cylinder from the intake valve housing (17).
NOTE: The pump may separate at joints A, B, or C. See
F
IG
. 6.
NOTE: These instructions are written with the pump
separating at joint A. If it separates at joints B or C,
disassemble it at that joint, place the intake housing (17)
in a vise, and continue with step 7.
6. Unscrew the intake valve housing (17) from the
cylinder (10). Pull the housing off the pump.
NOTE: The intake check valve assembly (ZE) should
slide down the priming piston rod (18) as you remove
the housing. If it does not slide easily, firmly tap on the
top of the housing (17) with a rubber mallet to loosen.
F
IG
. 5 Intake Valve Detail
17
ZD
37
38
18
16
ZG
15
39
ZE
F
IG
. 6
03829
22
21
18
19
Joint A
17
Joint B
10
Joint C
9
2
1