EE-37
PARTS-SERVICE
DATE: Oct. 20, 1983
MODELS: H30-60H E-3
GRAM
H40-60JS
GOVERNOR
Page 1
SUBJECT: IMPROVED VELOCITY GOVERNOR
An improved velocity governor is now available for the G.M. 4.181 engine.
INSTALLATION INSTRUCTIONS FOR GASOLINE AND L.P.G. ENGINES
Service original governor P/N 321733 with improved governor P/N 340405. Install with governor adjustment
bushing and screw towards valve cover. Use gaskets supplied with governor.
On gasoline models, rotate air line fitting on air duct towards engine valve cover and connect hose to vertical air
tube of governor. On L.P.G. models and gasoline models, use original hose.
Description Original P/N New P/N
Replace Hose (to dist Line) with 173690 or 7" bulk hose
321745
181761
Replace Hose (to carb) with 181082 or 9" bulk hose
173690
181761
Replace Ftg (on gov for vacuum 191805 with 175347 on gasoline engines
line to carb)
Replace both ftg s (on gov with 175347 on L.P.G. engines
191805
and carb for vacuum line)
Distributor vacuum tube P/N 321746 may be replaced with P/N 329426 or altered (by bending) to give neater
hose routing with new governor.
ADJUSTMENT:
Follow instructions included with governor or use procedure on back page of this gram.
INTERCHANGEABILITY: Parts are directly interchangeable.
PARTS STOCK: Use up.
EFFECTIVE S/N: F3D-2346D
F3T-1548D
We reserve the right to make changes in design or add improvements without incur-
ring the obligation to make such changes in equipment previously manufactured.
H6030
INSTRUCTIONS FOR ADJUSTING VELOCITY GOVERNOR Page 2
Service Notes:
I. Ensure that engine systems, mechanical, electrical and fuel are within serviceable limits and unit is at operat-
ing temperatures.
II. Tachometer should be accurate and compatible with ignition system. Ref. Parts Service Gram FF-21.
III. Air filter element should be clean and air filter connected to engine.
ADJUSTING SCREW (B)
ADJUSTING BUSHING (A)
IV. R.P.M. Adjust*: Remove locking screw from adjusting bushing (A). Hold adjusting screw (B) stationary
and turn adjusting bushing (A) clockwise to increase engine R.P.M. and counterclockwise to lower engine
R.P.M. Set to service manual specifications. Replace locking screw in closest hole, recheck R.P.M. load
engine by using tilt function and check for engine surge. If okay, install lockwire.
V. Governor Surges: To adjust R.P.M. fluctuation (surge) turn adjusting screw (B) 1/4 turn clockwise.
Turn adjusting bushing (A) counterclockwise to adjust no load governed R.P.M. Repeat until R.P.M. is
stable.
VI.
NOTE: If governor control is not sharp enough it can cause too great a variation in engine R.P.M.
between load and no load. If this is encountered performance may be sharpened by turning adjusting
bushing (A) 1/4 turn clockwise. Then turn adjusting screw (B) counterclockwise to adjust no load
R.P.M. Repeat this procedure until performance is satisfactory. If surging develops return to previous
settings until governor stabilizes. Recheck and lockwire adjustment.
*Normally only adjustment required.