Graco Inc. ti2272f Manual De Usuario

1.

Place drip pan or rags under sprayer to catch hydraulic oil 
that leaks out during repair.

2.

Remove pump pin (92) and retainer clip (120), page 15.

3.

Fig. 5. Remove hydraulic lines (93, 95) from fittings (16) at 
top left and right side of hydraulic motor.

4.

Loosen jam nut (65).

5.

Unscrew and remove hydraulic motor cap (64).

6.

Slide piston rod/hydraulic motor cap assembly (A) from 
hydraulic motor cylinder.

7.

Remove yoke (78).
a.

Fig. 5. Clamp hydraulic motor cap in vise with 
hydraulic motor piston rod facing up.

b.

Use shortened Allen wrench to remove two screws 
(13) from spring retainer (83). Remove yoke, spring 
retainer, piston and trip rod assembly from hydraulic 
motor cap.

c.

Cover spring retainer (83) with a rag to contain detent 
spring (20) and balls (8) when they are removed from 
yoke. Remove detent balls and spring. Remove 
spring retainer.

d.

Put yoke in vise and remove piston rod assembly 
from yoke.

1.

Fig. 5. Put hydraulic motor cap (64) in vise.

2.

Install yoke, spring retainer, piston and trip rod assembly 
in hydraulic motor cap. Use shortened Allen wrench to 
install two screws (13) in spring retainer to secure piston 
rod assembly to hydraulic motor cap.

3.

Slide piston rod assembly (A) into hydraulic motor 
cylinder (67).

4.

Screw down hydraulic motor cap (64). Unscrew hydraulic 
motor cap until inlet and outlet align with hydraulic line 
fittings and test hole in hydraulic motor cap points toward 
belt guard (117).

5.

Torque jam nut (65) against hydraulic motor cap (64) to 
150 ft-lb (17 N·m).

6.

Fig. 5. Install hydraulic lines (93, 95) to fittings (16) to top 
left and right side of hydraulic motor; torque to 40 ft-lb 
(54.2 N·m).

7.

Pull start rope slowly to align pin holes of hydraulic motor 
and displacement pump (111). Connect with pump pin 
(92); install retainer clip (120), page 15.

8.

Start engine and operate pump for 30 seconds. Turn 
engine OFF. Check hydraulic oil level and fill with Graco 
hydraulic oil, page 6.

Relieve pressure; page 6.

FLYING PARTS HAZARD
Detent spring has high energy potential. If detent 
spring is released without due care detent spring and 
balls could fly into the eyes of the disassembler. Wear 
safety glasses when removing or installing detent 
spring and balls. Failure to wear safety glasses when 
removing detent spring could result in eye injury or 
blindness.

FLYING PARTS HAZARD
Detent spring has high energy potential. If detent 
spring is released without due care detent spring and 
balls could fly into the eyes of the disassembler. Wear 
safety glasses when removing or installing detent 
spring and balls. Failure to wear safety glasses when 
removing detent spring could result in eye injury or 
blindness.