New Holland 40 Series Repair Manual page 45

- - - - - - - - - - - - - C H A P T E R 1 - - - - - - - - - - - - -
Balancer Removal
Balancer Gear Backlash
1. Dial Indicator
2. Backlash Check
1 . Remove the oil pan to expose the balan-
cer and using a dial indicator gauge,
check backlash between crankshaft gear
and balancer drive gear, Figure 49. Posi-
tion the dial plunger to the face of one of
the drive gear teeth, then rock the gear to
measure backlash. Readings should be
taken at 90° intervals around the drive
gear to 0.002--0.012 in (0.05--0.30mm). If
the specification is exceeded, install
new balancer gears.
Disassembly
1. Extract the roll pins securing the shafts to
the housing and disassemble, Figure 50.
50
Inspection and repair
1 . Measure the outside diameter of shafts
~nd the inside diameter of the gear bush-
ings and establish if clearance is to speci-
fication. If exceeded, replace shaft
and / or gear assembly:
0.0002--0.008 in (0.005-0.020mm).
2. Examine shafts and balancer gear teeth
for wear and damage and replace as nec-
essary. Ensure lubrication holes in the
shafts are free from obstruction upon re-
assembly.
For crankshaft balancer gear repair and as-
sembly, refer to the crankshaft section.
Re-Assembly
1 . Position balancer gears and thrust wash-
ers in the housing, with timing marks
aligned and facing the roll pin side of the
balancer. Install shafts from the opposite
side and secure with roll pins.
2. Using a feeler gauge measure end float of
assembled gears is to the specification:
0.008-0.020 in (0.20-0.51 mm).
3. Position a dial indicator gauge to the tooth
of one gear and hold the other firmly.
Rocking the free gear, measure backlash
at 90° intervals around the gears to
0.002--0.010 in (0.05--0.25mm).
Installation
A1-47A
D(i
Balancer Gears
1. Roll Pin
3. Thrust Washers
5. Thrust Washers
2. Housing
4.
Driven Gears
6. Shafts
27