Triumph TR6 PI Operation Manual page 81

18
Reassembly
17. Lubricate the valve stems with clean engine oil and
assemble them to the cylinder head.
18. Fit the valve spring seats over the valve stems.
19. Place the valve springs over the valve stems ensuring
that they locate correctly in the seats. (See Data for
engines fitted with double valve springs.)
NOTE: On later P.1. models the valve collar arrangement on
both inlet and exhaust valves is as shown on valve
(A).
20. Place the valve spring collar(s) over the valve (A) and
using valve spring compressor 6118B fit the split valve
cotters to secure the valve. and/or
21 Place the top outer collar in position on the valve
spring. - Valve B.
22. Place the top inner valve collar in position and using
the valve spring compressor secure the valve with the
split valve cotters.
NOTE: Repeat operation 20, 21 and 22 on the remaining
valves.
23. Reverse instructions I to 3.
ENGINE
NT2754
••
VALVES
INLET EXHAUST
Petrol Injection Engine
Up to Eng. No. CR 2844
Intermittent from Eng. No. CR 2845 to CR 285 I
Intermittent from Eng. No. CR 2845 to CR 2935
Complete from Eng. No. CR 2936
Carburetter Engine
Up to Eng. No. CF 12500 From Eng. No. CF 12501
Head diameter
1·443 - 1·447in 1·256 ~ 1·260in
1·193 ~ 1·197in
(36·65 - 36·75mm) (31"90 - 32'OOmm) .(30·30 - 30·40mm)
Stem diameter
0·3107 - 0·3113in 0·3100 - 0·3 105 in 0·3100 - 0·3106in
(7·87 - 7"9Omm) (7"87 - 7"88mm)
(7"87 - 7"89mm)
Length
4·598 - 4"606in 4·590 - 4·613in
4·597 - 4·607in
(116·79-116"99mm) (I 16·58 - 117·l7mm) (I 16'76 - 117·0Imm)
Seat angle 90° inclusive
±~~.
90
Q
inclusive ±~g'
90l) inclusive
±~~.
••
VaIve guides
Length
External diameter
Bore diameter
Height above head
Triumph TR6 Manual. Part No.
S4S277
Issue 3
2'06in
(52-386 mm)
0·5015 -,- 0'5020 in
(12'725 - 12·751 mm)
0'312 - 0'313 in
(7-925 - 7-95 mm)
0'63 in
(16-0 mm)
2'25 in
(57'15 mm)
0'5015 - 0'5020 in
(12'725 - 12'751 mm)
0'312 - 0'313 in
(7'925 - 7'95 mm)
0'63 in
(16-0 mm)
Continued
12.29.18 Sheet 4