Perkins 1106D Disassembly And Assembly page 50

50
Disassembly and Assembly Section
Illustration 89
NOTICE
Ensure that the valve spring is compressed squarely
or damage to the valve stem may occur.
2. Follow Steps 2.a through 2.d in order to position
the appropriate piston at top dead center.
a. Install Tooling (B) in position on the cylinder
head in order to compress a valve spring (10)
for the appropriate piston.
b. Use Tooling (B) in order to compress the valve
spring (10) and open the valve slightly.
Note: Do not compress the spring so that the valve
spring retainer (9) touches the valve stem seal (not
shown).
c. Use Tooling (C) in order to rotate the crankshaft
carefully, until the piston touches the valve.
Note: Not use excessive force to turn the crankshaft.
The use of force can result in bent valve stems.
d. Continue to rotate the crankshaft and gradually
release the pressure on Tooling (B) until the
piston is at the top dead center position. The
valve is now held in a position that allows the
valve spring to be safely removed.
Note: Valve springs must be replaced in pairs for the
inlet valve or the exhaust valve of each cylinder. If all
valve springs require replacement the procedure can
be carried out on two cylinders at the same time. The
procedure can be carried out on the following pairs of
cylinders. 1 with 6, 2 with 5, and 3 with 4. Ensure that
all of the valve springs are installed before changing
from one pair of cylinders to another pair of cylinders.
Do not turn the crankshaft while the valve springs are
removed.
3. Apply sufficient pressure to Tooling (B) in order to
allow removal of the valve keepers (8).
Note: Do not compress the spring so that the valve
spring retainer (9) touches the valve stem seal (not
shown).
Remove the valve keepers (8).
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4. Slowly release the pressure on Tooling (B).
5. Remove the valve spring retainer (9) and remove
the valve spring (10).
6. If necessary, remove the valve stem seals (not
shown).
7. Repeat Steps 3 through 6 in order to remove
the remaining valve springs from the appropriate
cylinder.
8. Remove Tooling (B).
Installation Procedure
Table 17
Tool
A
B
C
C
D
E
NOTICE
Required Tools
Part
Part Description
Number
-
Circlip Pliers
21825739
Valve Spring Compressor
27610235
Adapter
27610295
Head
21825576
Crankshaft Turning Tool
27610289
Crankshaft Turning Tool
27610290
Gear
POWERPART
21820221
Rubber Grease
27610296
Torque Wrench
SENR9983
Qty
1
1
1
1
1
1
1
1
1