Valve Guide Replacement - Takeuchi TB 175 Handbuch

4.2.7 Valve guide replacement

1)Use a valve guide extraction tool (12.1-1 in Chapter 12) and extract the valve guide from the cylinder
head.
2)Put liquid nitrogen or ether (or alcohol) with dry ice added in a container and put the valve guide for
replacement in it for cooling. Then insert it in with a valve guide inserting tool (Refer to No.2 of 4.1.2 in
Chapter 4).
Do not touch the cooled valve guide with bare hands to avoid skin damage.
3)Check the inside diameter and finish to the standard
inside diameter as required with a reamer.
4)Check the projection from the cylinder head.
Model Number of valves
3TNV82A
4TNV84
2 valves
3TNV84 (T)
4TNV88
4TNV84T
4TNV94L
4 valves
4TNV98(T)
4TNE106(T)
4. Disassembly, inspection and reassembly of engines
mm
Projection
11.7 to 12.0
Cylinder head
14.7 to 15.0
8.2 to 8.5
9.7 to 10.
13.4 to 13.6
81
Valve guide extracting
& inserting tool
Projection
Valve guide
Valve guide replacement
(R.1)