Generac Power Systems 53187 - Manual (Page 63)

SECTION 2.1
=NniMF SPFCinCATIONS & CHARTS
PART 2
FMfilNE MECHANICAL
Engine Tolerances and Fits (Continued)
VALVE SYSTEM (CONT'D): LUBRICATION SYSTEM:
Valve Tim ing: Oil Pum p:
Intake Valve Discharge Volum e
Open .............................., 13’ BTDC In Quarts........................ . Over 10.57/Minute
closed............................. , 43' BTDC Liters............................. . Over 10.00/Minute
Exhaust Valve Relief Pressure................... . 43-71 psi
Open ............................ .. 43’ BTDC Pum p Rotor to Vane Tip
Closed............................ , 13* BTDC Clearance (Standard
Tolerance) ........................ . 0.0004-0.0059 inch
Push Rods: Pum p Rotor to Vane
Standard Overall Length .., ,5.181 inch
Maxim um Allow able Tip
Overall Length Standard
Clearance.......................... . 0.010 inch
Tolerance .......................... , 5.173-5.189 inch
Pum p Rotor to Cover Side
Push Rod Outer Diam eter ., . 0.248 inch
Clearance (Standard
Tolerance) ........................ . 0.004-0.006 inch
Rorkpr Arm :
Pum p Rotor to Cover
Rocker Arm Standard
Maxim um Side Clearance . . 0.008 inch
Diam eter............................ . 0.459 inch
Rocker Arm Standard
Tolerance.......................... . 0.4586-0.4594 inch
Maxim um Allow able W ear . . 0.4555 Inch
FUEL SYSTEM:
Injection Pum p:
Diam eter of Pum p Plunger. . 0.1969 inch
Pum p Plunger Stroke......... . 0.2362 inch
Fuel Injection Tim ing......... .
20’-2V BTDC
Injection Nozzle:
Injection Pressure ............ . 1706.4-1848.6 psi
Angle of Injection.............. . 12’
Engine Special Torque Values
Connecting Rod Bearing Cap Oil Pipe Eyebolts
Foot-Pounds...................... . 22-25 Foot-Pounds....................... . 7-9
m -kg................................. . 3.0-3.5 m -kg.................................. . 1.0-1.3
Main Bearing Holders Cylinder Head
Foot-Pounds...................... . 18-22 Foot-Pounds....................... . 33-36
m -kg................................. . 2.5-3.0 m -kg.................................. . 4.5-5.0
Flyw heel Cover Rocker Arm Assem bly
Foot-Pounds...................... . 34-40 Foot-Pounds....................... . 15-18
m -kg................................. . 4.7-5.S m -kg.................................. . 2.0-2.5
Flyw heel Cylinder Head Cover
Foot-Pounds...................... . 43-51 Foot-Pounds....................... . 6-8
m -kg................................. . 6.0-7.0 m -kg.................................. . 0.8-1.2
Suction Filter Fuel Injection Pipes
Foot-Pounds...................... . 7.0-9.0 Foot-Pounds....................... . 18-22
m -kg................................. . 0.9-1.3 m -kg.................................. . 2.5-3.0
Cam shaft Plate Injection Nozzle Holders
Foot-Pounds...................... . 7-9 Foot-Pounds....................... . 58-61
m -kg................................. . 0.9-1.3 m -kg.................................. . 8.0-8.5
Crankshaft Pulley
Foot-Pounds... 72-80
PAGE 2.1-6