Ingersoll-Rand 7120 User Manual
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7/120 (P425AWIR), 9/110 (XP375AWIR), 10/105 (HP375AWIR), 14/85 (VHP300AWIR),
7/170 (P600WIR), 10/125 (HP450WIR), 14/115 (VHP400WIR)
Removing Engine from Long Term Storage
Refer to the appropriate section for detailed
services listed below or have your authorized
servicing dealer or engine distributor perform
services that you may not be familiar with.
1. Remove all protective coverings from engine.
Unseal all openings in engine and remove
covering from electrical systems.
2. Remove the batteries from storage. Install
batteries (fully charged) and connect the
terminals.
3. Install fan/alternator poly–vee belt if removed.
4. Fill fuel tank.
5. Perform all appropriate pre–starting checks.
IMPORTANT: DO NOT operate starter more
than 30 seconds at a time. Wait at least 2
minutes for starter to cool before trying
again.
6. Crank engine for 20 seconds with starter (do
not allow the engine to start). Wait 2 minutes
and crank engine an additional 20 seconds to
assure bearing surfaces are adequately
lubricated.
7. Start engine and run at low idle and no load
for several minutes. Warm up carefully and
check all gauges before placing engine under
load.
8. On the first day of operation after storage,
check overall engine for leaks and check all
gauges for correct operation.
Specifications
General Engine Specifications
ITEM
6IRF8TE
Number of Cylinders
6
Bore
106 mm (4.19 in.)
Stroke
127 mm (5.0 in.)
Displacement
6.8 L (414 cu in.)
Compression Ratio
17.0:1
Aspiration Turbocharged
Engine Firing Order
1–5–3–6–2–4
Valves Per Cylinder
1 Intake
1 Exhaust
Valve Clearance (Cold)
Intake (Checking)
0.31–0.38 mm
(0.012–0.015 in)
Exhaust (Checking)
0.41–0.48 mm
(0.016–0.019 in)
Intake (Adjusting)
0.36 mm
(0.014 in.)
Exhaust (Adjusting)
0.46 mm
(0.018 in.)
Max. Crank Pressure
0.5 kPa
(2 H
2
O)
Vibration Damper Maximum
Radial Runout
1.50 mm
(0.060 in.)
Governor Regulation
(Industrial)
7—10 %
Thermostat Start To Open
Temperature
82
_
C
(180
_
F)
Thermostat Fully Open
Temperature
94
_
(202
_
F)
Oil Pressure At Rated
Speed, Full Load (
±
15 psi)
345 kPa
(50 psi)
Oil Pressure At Low Idle
(Minimum)
105 kPa
(15 psi)
Length
1116 mm
(43.9 in.)
Width
623 mm
(24.5 in.)
Height
1012 mm
(39.9 in.)
Weight
587 kg
(1290 lb)
Engine Crankcase Oil Fill Quantities
6IRF8TE
Crankcase Oil Capacity L (qt) 19.5 (20.6)
General Engine Specifications
ITEM
4IRD5AE