Graco GH 16U277, Repair Manual

Page: 18 / 36

Hydraulic Pump Replacement
18 332157A
Hydraulic Pump Replacement
Changing Hydraulic Oil
Draining Oil
a. Place drain pan under oil tank and drain plug.
b. Unscrew reservoir (64) drain plug and drain oil
from reservoir.
Refilling Oil
a. Replace drain plug.
b. Fill tank with Graco Hydraulic Oil, ISO 46. Tank
holds approximately 4 gallons.
Removal
1. Perform Pressure Relief Procedure , page 6. Allow
hydraulic system to cool before beginning the
service procedure.
2. Drain oil, Changing Hydraulic Oil procedure,
page 18.
3. Remove screw (197) and pump handle cover (196).
Remove four cover bolts (79) and cover (140). (It is
not necessary to remove the hydraulic lines before
removing cover. The cover is designed to provide
ample room for the cover to fit over the hose.)
4. Unscrew suction line connections to hydraulic
pump. Place a container under hoses to catch any
dripping oil.
drain
plug
ti20935a
79
140
ti7805b
197
196
ti7790a
ti20947a