Hitachi 288466 User Manual
Page 7
Repair
311845C
7
7.
Soak all leather packings in SAE 30W oil for 1 hour
minimum prior to assembly.
Note: For steps 8-10 refer to Fig. 12.
8.
Place male gland (20) in cylinder.
9.
Alternately stack UHMWPE (21) and leather pack-
ings (22). Note orientation.
10. Place female gland (23) in top of cylinder. Seat
packings.
F
IG
. 12
11. (Fig. 13) Install packing nut (3) into cylinder and
hand tighten.
F
IG
. 13
12. (Fig. 14) Install o-rings (14) inside cylinder (2) and
on sleeve (4). Slide sleeve (4) into bottom of cylinder
(2). Replace o-ring (15) if desired.
F
IG
. 14
Note: O-ring (15) is not required for safe pump opera-
tion.
13. (Fig. 15) Grease top inch or two of piston rod (5)
that goes through the sleeve/cylinder assembly
throat packings. Grease piston packings at bottom
of piston pump.
Carefully slide piston assembly (5) into bottom of
sleeve/cylinder assembly (2) until pump rod pro-
trudes out the top and piston packings are totally
inside the sleeve (4).
F
IG
. 15
CAUTION
Never slide piston assembly (5) into top of sleeve (4)
as this may damage piston packings.
20
23
21
22
ti8857a
288467/
OR
288468
288466
288819
ti8858a
3
2
4
15
14
Place inside cylinder (2)
and push to shoulder
with sleeve (4).
ti8859a
ti8860a
5
15
2
4
ti8860a