Kohler KT19 - Machined Camshaft Bore Plug With O-ring

#2 Crankcase Half
Oil Passage (on #1 half)
Sealant
Sealant
~
Figure 8-14. Applying Crankcase Sealant
SEIIIUJ(
Machined Camshaft Bore Plug With 0-ring
Series II engines use a machined plug with an
0-ring to seal the camshaft bore. Install this plug
before placing the crankcase halves together. See
steps #3-5 below.
Other KT17, KT19 and KT21 engines use a stamp-
ed cup plug that is installed after the crankcase
halves are fastened together. When servicing en-
gines using this type of plug-apply crankcase
sealant, place the crankcase halves together, and
install crankcase fasteners as instructed in steps 6
and 7. Install camshaft bore cup plug as instructed
on page 60.
3. Inspect the plug and 0-ring. Replace plug if
bent, cracked, or damaged. Replace 0-ringif stretched,
cut,
or hard and inflexible.
4. Lubricate the 0-ring with engine oil or liquid
soap. Insert the plug into the camshaft bore in
the #1 crankcase half. When reinstalling a used
plug,
make sure the marks scribed on the plug
and crankcase during disassembly are aligned.
See Figure 8-15.
59
SECTION 8
ASSEMBLY
Figure 8·15. Installing Machined Camshaft Bore Plug
Into #1 Half
5. Place the #2 crankcase half on the #1 half.
Place thumb pressure on the plug as the halves
are brought together (see Figure 8-16). Maintain
pressure on the plug as the crankcase fasteners
are installed and tightened. This will ensure
that the plug shoulder is bottomed tightly
against the crankcase.
Figure 8·16. Installing #2 Crankcase Half
6. Install the fasteners and torque numbers 1 thru
6 in the sequence shown in Figure 8-17 to a
preliminary value of approximately 100 in. lbs.
(11 Nm-1.0 Kgm). Torque the remaining bolts to
100 in. lbs. (11 Nm, 1.0 Kgm) in the most
expedient sequence.
Engines with serial number 9755084 or
earlier have an extra crankcase bolt(#16 Figure
8-18). Torque to 35 in. lbs. (4 Nm, 0.4 Kgm).