
STEP 3 HYDRAULIC PLUMBING
DIAGRAMS B, C, & D show proper plumbing for all SS980 models. Please carefully read the
Helpful Hints and Notes listed below before beginning.
HELPFUL HINT
:
We recommend the use of minimum 2” suction hose. If the suction
hose is too small the hydraulic pump will cavitate and fail prematurely. A 1” pressure hose
is recommended for flows up to 40 gpm. A 1 1/4” pressure hose is recommended for flows
greater than 40 gpm. The 980 Series has two 2” suction port for high flow and tandem
applications.
NOTE: Be careful not to over tighten NPT threads. It is very easy to crack these
types of ports when tightening fittings.
DIAGRAM B
INSTALLATION GUIDE , OPERATING PROCEDURES & PARTS BREAKDOWN
PAGE 3
STAC INC
l
ST PAUL MN
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800-334-7699
Mobile Hydraulic Systems
®
RETURN LINE
PRESSURE LINE
PRESSURE FOR
HYDRAULIC FAN
INLET LINE
PTO
PRESSURE RELIF VALVE
HYDRAULIC PUMP
Summary of Contents for THERMAFLOW SS980H
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