John Deere 4045Tf270 Engine - Genie GTH-636 Service Manual

June 2007
REV D

John Deere 4045TF270 Engine

GTH-636, GTH-644, GTH-842 and GTH-844
Displacement
Number of cylinders
Bore & stroke
Horsepower
Firing order
Low idle
Frequency
High idle
Frequency
Compression ratio
Valve clearances, cold
Intake, allowable range
Exhaust, allowable range
Intake, recommended setting
Exhaust, recommended setting
Lubrication system
Oil pressure
(at rated speed with full load)
Oil capacity
(including filter)
Oil viscosity requirements
Units ship with John Deere Engine Break-In Oil.
During the break-in period, add John Deere Engine
Break-In Oil as needed to maintain the specified oil
level.
Extreme operating temperatures may require the use of
alternative engine oils. For oil requirements, refer to the
Engine Operator's Manual on your machine.
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Injection system
Injection pump make
Peak injection pressure
275 cu in
4.5 liters
Fuel requirement
4
For fuel requirements, refer to the engine Operator's
4.19 x 5 inches
Manual on your machine.
106 x 127 mm
Engine coolant
99 @ 2500 rpm
73.8 kw @ 2500 rpm
Capacity
1 - 3 - 4 - 2
Alternator
900 rpm
180 Hz
Output
2600 rpm
Battery
520 Hz
Type
17:1
Group
Quantity
0.012 to 0.015 in
0.31 to 0.38 mm
Cold cranking ampere @ 0°F
0.016 to 0.019 in
Reserve capacity @ 25A rate
0.41 to 0.48 mm
0.14 in
0.36 mm
Continuous improvement of our products is a
0.18 in
Genie policy. Product specifications are
0.46 mm
subject to change without notice.
50±15 psi
3.4±1 bar
14 quarts
13.2 liters
Section 2 • Specifications
SPECIFICATIONS
Stanadyne
10,000 psi
690 bar
2.6 gallons
9.8 liters
95 A, 14V DC
12V DC
C31
1000A
200 minutes
2 - 7
1