Kohler KT19 series II User Manual

SECTION 8
ASSEMBLY
OIL
PUMP
1. Slide oil pump drive gear shaft through support
rib from the inside of the crankcase. Put drive
gear and spacer into position in crankcase
(slotted end of gear hub facing support rib and
spacer between rib and gear).
2. Push pump drive gear shaft through center hole
in spacer and gear hub and into pump cavity.
3. Rotate pump shaft and gear hub until hole in
shaft lines up with slot in gear hub. Lubricate a
new roll pin with grease and drive the pin flush
to the hub as shown in Figure 8-4.
4. Measure pump drive gear end play with a feeler
gauge, if the end play is greater than .029",
service spacers are available to bring end play
to specified tolerance. Minimum drive gear end
play is . 0 10".
5. Lubricate the pump cavity with oil, then insert
inner and outer rotors into cavity. (See Figures
5-5 and 7-19.) Assemble the pump cover to the
crankcase with four self-tapping, slotted hex
washer screws (#10-32 x 3/8").
CONNECTING RODS
Lubricate the connecting rod journals and rod
bolts,
then install the rods on the crankshaft in the
following manners:
KT17 - Cast Rod. Two raised markings (bosses)
between rod bolt holes on top must face
toward flywheel.
KT19- Forged Rod. Machined edge of bolt hole
must face up toward camshaft.
KT21 - Forged Rod. Machined edge of bolt hole
must face up toward camshaft.
On earlier model KT17-
Position rods on crankshaft so that when
crankcase is in its upright position, oil hole
in rod caps will be facing up.
Overtorque the rod bolts to 240 in.lbs., loosen, then
retorque to 200 in. lbs.
Posi-Lock Connecting Rods
Posi-Lock connecting rods are used on all Series II
engines, and may be used for service replacement
of connecting rods on other KT1 7 engines. The
54
Figure
8-4. Securing Oil Pump Gear To Shaft
Posi-Lock
design ensures positive alignment of
connecting rod and cap for uniform bearing load-
ing and eliminates bore distortion and cap shift.
NOTE: Posi-Lock connecting rods are not avail-
able for service replacement on pre-Series II KT19
engines (specifications before 49200).
1. Make sure match marks are aligned when rod is
installed to crankshaft.
2. KT19 connecting rods have an angled design
with respect to the shank and the rod cap.
Install KT19 rods to crankshaft with the shank
angled down and away from the camshaft. See
Figure 8-5.
3. When installing a new Posi-Lock rod-torque
nuts to 140 in. lb.
When installing a used Posi-Lock rod-torque
nuts to 100 in. lb.
CAUTION: Do not overtorque, loosen, andre-
A torque Posi-Lock connecting rods.
8 Torque nuts on Posi-Lock rods
directly to the specified values.

Kohler KT19 series II Specifications

General

Brand	Kohler
Model	KT19 series II
Category	Engine
Language	English