Andover Norton International Ltd 
3, Old Farm Buildings
Standen Manor Estate
Hungerford, Berks. RG17 0RB
England
Tel.(0044)(0)1488-686816
Fax (0044)(0)1488-686826
e-mail
office@andover-norton.co.uk
The exclusive Source of all  Genuine Norton Commando and Dominator Factory Spare Parts

 
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Service Information- Valve gear

Valve Springs:

06-7174

Valve spring set, 500/600 Twin

=4x NM19302 + 4x NM19303

06-7070

Valve spring set, 650/750/850 Twin

=4x 06-7822 + 4x 06-7823

NM21194/5 Valve spring set, Navigator =4x NM21194 + 4x NM21195

Valve Spring Cups/Cotters:

06-7507

Cotters (pair), all Twins

06-7506

Top Cup, valve spring, all Twins

06-7545

Bottom Cup, valve spring, all Twins up to 750cc

06-1399

Bottom Cup, valve spring, 850cc Twins

Valves (L= overall length from top of stem to bottom of tulip, D= diameter):

06-7942

Valve, inlet, all ally head Twins pre-1960, L102,9mm, D35,7mm

06-6974

Valve, inlet, all Twins post-1960 up to 650SS, L99.9mm, D35.7mm

06-7884

Valve, inlet, Atlas, L100.2mm, D38.1mm

06-4034

Valve, inlet, Commando 750&850, L102.3mm, D37.8mm

06-7570

Valve, exhaust, all Twins pre-Commando, L99.5mm, D33.3mm, also all iron head twins, inlet

06-5115

Valve, exhaust, Commando 750&850, L101.9mm, D33.0mm

Valve Guides: (all cast iron)

06-2726

Oil seal, for inlet valve guide, all Twins

06-2725

Valve guide, inlet, all twins up to 750cc

06-2760

Ditto, +.002" oversize

06-2767

Ditto, +.005" oversize

06-2768

Ditto, +.010" oversize

06-2769

Ditto, +.015" oversize

06-3527

Valve guide, exhaust, all twins up to 750cc

06-3528

Ditto, +.005" oversize

06-3529

Ditto, +.010" oversize

06-3530

Ditto, +.015" oversize

06-5024

Valve guide, exhaust, all 850 Twins

06-5025

Ditto, +.002" oversize

06-5026

Ditto, +.015" oversize

06-5027

Valve guide, inlet, all 850 Twins

06-5028

Ditto, +.002" oversize

06-5029

Ditto, +.015" oversize

01-1111 Circlip for 850 Valve Guide

Pushrods: (pushrod length is overall length)

06-7031 Pushrod, inlet, 500 Twin, 7.9"
06-7032 Pushrod, exhaust, 500 Twin, 7.0"
06-7501 Pushrod, inlet, 600&650 Twin, 8.25"
06-7502 Pushrod, exhaust, 600&650 Twin, 7.40"
06-7940 Pushrod, inlet, 750/850 Twin, 8.15"
06-7941 Pushrod, exhaust, 750/850 Twin, 7.30"

Cam Followers:

06-7820

Tappets (pair) all Twins (2 pairs needed for one engine)

06-7820+020

Tappets (pair), all Twins, +.020" oversize for worn barrels

Camshafts:

06-7817

Camshaft, Dominator 650 & 750 and very early Commando with points at rear of engine

06-7817/2S

Camshaft, Dominator 650/750, 2S-Profile

06-1084

Camshaft, STD, Commando with breather

06-2608

Camshaft, STD, Commando w/out breather (use 06-1084)

06-3536

Camshaft, Commando, 2S-Profile (with breather so fits early engines)

06-4858

Camshaft, Commando, 4S-Profile (with breather so fits early engines)