10 ► GPV13
User Manual
OPERATION
PREPARATION FOR USE
Do not operate the power unit until you have read the
engine
operating and maintenance instructions manual
furnished with the unit.
1. ENGINE CRANKCASE OIL LEVEL
Always check the engine oil level before starting the
engine. Make sure the oil level is at the FULL MARK
on the dipstick. Do not overfill. Use 4-stroke motor oil
that meets or exceeds the requirements for API service
classifications SJ or later as specified in the engine op-
erating and maintenance manual. Refer to the engine
manual for oil viscosity grade.
2. ENGINE FUEL LEVEL
Check the fuel
level. If low, fill with unleaded gasoline
with a minimum of pump octane of 86 or higher. Refer to
the engine manual for details.
3. HYDRAULIC FLUID
Check the sight gauge on the hydraulic fluid reservoir for
the proper fluid level. Use fluids meeting the following
specifications.
VISCOSITY (FLUID THICKNESS)
U.S. METRIC
50 °F 450 SSU Maximum
10 °C 95 C.S.
100 °F 130-200 SSU
38 °C 27-42 C.S.
140 °F 85 SSU Minimum
60 °C 16.5 C.S. Min
Pour Point:
-10°F/-23°C Minimum (for cold startup)
Viscosity Index:
(ASTM D-2220) 140 Minimum
Demulsibility:
(ASTM D-1401) 30 Minutes Maximum
Flash Point:
(ASTM D-92) 340°F/171°C Minimum
Rust Inhibition:
(ASTM D-665 A & B) Pass
Oxidation:
(ASTM D-943) 1000 Hours Minimum
Pump Wear Test:
(ASTM D-2882) 60 mg Maximum
The following fluids work well over a wide temperature
range, allow moisture to settle out and resist biologi-
cal growth that may occur in cool operating hydraulic
circuits. These fluids are recommended by Stanley Hy-
draulic Tools. Other fluids that meet or exceed the speci-
fications of these fluids may also be used.
• Chevron AW-MV-32
• Exxon “Univis” J-26
• Mobil D.T.E. 13
• Gulf “Harmony” AW-HVI-150-32
• Shell “Tellus” T-32
• Texaco “Rando” HD-AZ
• Union “Unax” AW-WR-32
•
Terresolve EnviroLogic 132
4. HYDRAULIC CONNECTIONS
The recommended hose length is 25 ft/8 m with a 1/2
inch/12.7 mm inside diameter. The hoses must have
a working pressure rating of at least 2500 psi/175 bar.
Each hose end must have male thread ends compatible
with HTMA or EHTMA (HYDRAULIC TOOL MANUFAC-
TURERS ASSOCIATION) quick disconnect fittings (NPT
type threads). (See Figure 3.)
Figure 2. Panel Control Valve
Facing the panel control valve (see Figure 2, the left
male quick disconnect fitting is the PRESSURE FLUID
OUT fitting, marked with “P”. The right female quick dis-
connect fitting is the RETURN FLUID IN fitting, marked
with “T”.
QUICK DISCONNECT COUPLERS
HTMA approved quick disconnect couplings are in-
stalled to hydraulic hoses so that the direction of oil flow
is always from the male to the female quick disconnect
as shown in Figure 3. Quick disconnect couplings and
hose fittings are selected so that additional fittings such
as reducer or adapter fittings are not required.
If adapter fittings are used, they must be approved steel
hydraulic fittings meeting a minimum operating pressure
rating of 2500 psi/172 bar. Do not use galvanized pipe
fittings or black pipe fittings.
DO NOT OVERTIGHTEN THE FITTINGS.
Hydraulic
Power Pack
GPV13
