Make AJS
Model SINGLES 5TH EDITION
Year 1948-1957
Pages 182
Item INSTRUCTION AND MAINTENANCE MANUAL

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INDEX
A.V.C. regulator and cut-out unit, 139 Adjustment:brake shoes, 130 dynamo chain, 69front chain, 68front-wheel bearings, 122 magneto chain, 70Monobloc carburetter, 62push rod, 31Scrambles models, 160 rear chain, 68, 69rear-wheel bearings, 124, 128 regulator 140 Steering-head, 101 Ammeter, testing, 145 Battery, 146 Big-end:checking, 42rattle in, 20Brake-drum arrangement, 127 Bake-shoe adjustment, 130 Brakes, 129cause of ineffective, 130 Trials models, 152 Cam markings, 64Cam-wheel bushes, remov-ing, 43Cams: Clutch, A.M.C., slip, 94Clutch, C.P. type, 89dismantling, 91lubricating cable, 90reassembling, 91slip, 90Compression, checking, 25 Compression ratio: increasing, 54on Scrambles models, 154,Connecting-rod, renewing, Contact-breaker, 133 Crankcase, 50assembly, 53separating, 41Cut-out and regulator unit, 139 Cut-out contacts, cleaning, 140 Cylinder compression,checking, 25Cylinder-head, 29alloy type, 17, 18Cylinder-wall feed, 14 Decarbonising, 25Scrambles engines, 162Dynamo, 136Dynamo-chain adjustment, 68 Dynamo output, checking, 138 500-c.c. models (contd.):frame and forks, 101 sparking-plugs, 55technical data, 177-162 transmission, 68tuning, 166wheels, 122Flywheel:assembly, 48end float, 23, 24Shafts: removal of, 44replacing, 47Flywheels:Scrambles models, 156separating, 42Trials models, 151 Foot-change assembly, 73Foot-change springs, 77Fork assembly, removing, 109 Fork springs:changing, 106 data, 176Fork, faults in, 105, 106Frame, 100maintenance, 101modifications to, 120Front-chain adjustment, 68Front-wheel bearings, 122Fuels for Scrambles en-gines, 162
fitting timing, 65racing, 168Camshaft: bushes, refitting, 51end-float, noise in, 22wear, 17Camshaft: fitting special, 53, 167types of, 54 ,Carbon removal, 28Carburetter: adjusting Monobloc, 62cleaning, 30Monobloc, 59Scrambles engines, 161 getting on Trials and Scrambles models, 159 slow-running adjustment, 62 T . T . type, 159throttle-slide markings, 58 tuning, 167up to 1954, 57Carburetters, 55Chain adjustment, 68 Clutch, A. M .C . 92adjustment, 93 dismantling, 95 Electrical equipment, 136Trials models, 152Engine:decarbonising, 25design changes, table of, 38 dismantling, 36fitting later-type, 6750 0-cc , 36 noises, 19nut sizes, 45overhaul, 36reassembling, 48removal, 37Scrambles, 160servicing, 11, 25350-c.c, 36 tuning, 166Exhaust-valve seising,remedying, 16 Fabric oil filter, 34Fault location, 11Filters, oil, 34500-cc. models: brakes, 128carburetters, 55electrical equipment, 133engine overhaul, 36 Gear ratios, table of, 174, 175 Gearbox, A .M . C type:clutch adjustment, 93clutch shock absorbers, clutch Slip, 94construction, 92dismantling, 96root-change mechanism, 92 kick-starter, 99reassembling, 99Gearbox, B.52 type:clutch rattle, 78construction, 76faulty gear selection, 76 gears removal and re-fitting, 87, 88kick-starter, 79, 86noisy gear selection, 77oil leakage, 79Gearbox, C.P. type:chaincase, 80clutch assembly, 81construction, 71dismantling, 81exhaust pipe, 80extracting bushes, 83faulty gear selection, 73

INDEX
Gearbox, C.P. type (contd.):
foot-change assembly, 85
noise, 71
noisy gear engagement,
74
reassembling, 84
silencer, 80
Gearbox,Trials models. 151
Grinding-in valves, 28
Headlamps, 142
pre-focus type, 144
Ignition system, 133
Ignition timing:
checking, 32
Scrambles engines, 161
setting, 34
Lubricants, recommended,
165
Lubrications system, 36
Lubrication of rear chain,
71
Magnetic oil filter, 34
Magneto, 136
Magneto-chain adjustment,
70
Main bearings, removing,
43
Maintenance:
frame, 101
periodical, 35
Monobloc carburetter, 59,
60
Noise, 11
engine, 19
silencer, 59
Oil:
checking fork content,
108
consumption, cause of
excessive, 12
leaks, 14
loss of, 13
Oil filters, 34
Oil pump, 34
Oil pump plunger, 33
modification, 12
Oil tank, 118
Overhead-valve engines,
servicing valve
guides, 18
Periodic maintenance,
Trials and Scrambles
models, 163
Petrol consumption:
cause of excessive, 62
checking, 58
reducing heavy, 56
Petrol tank, 31
Piston:
high-compression, 153
removal, 41
wirewound, 21
Piston slap, cause of, 20
Positive-earth system, converting
to, 135
Push-rod adjustment, 31
Scrambles engines, 160
Pump, oil, 34
Quick detachable wheel, 128
Racing cams, 168
Rear chain:
adjustment, 69
lubrication, 71
Rear suspension:
dismantling, 117
spring data, 176
Rear wheel:
bearings, 124
refitting, 127
removing, 126
Regulator:
adjustment, 141
testing, 140
Regulator and cut-out, 139
Rocker box:
dismantling, 44
noise, 23
refitting, 30
Routine maintenance table,
35
Scrambles models, 152
engines, 160
exhaust-pipe length, 156
flywheels, 156
high-compression pistons
for, 153
measuring compression
ratio, 154
rear wheel, 128
sparking-plugs, 154
technical data, 177
wheel balance, 158
Servicing engine, 25
Shuttle type damping, 105
Sidecar conversion, 132
Silencer, noise in, 59
Slow-running adjustment,
62
Sparking-plugs, 55, 145
for Scrambles models, 154
Springs and colour code,
table of, 118
Steering-damper, fitting,
103
Steering faults, 103, 104
Steering-head adjustment,
101
Suspension:
rear, 117
Teledraulic, 105, 113
T.T. type carburetter, 159
Tappet-guide removal, 45
Technical data tables, 177-
183
Teledraulic suspension, 105,
113
350-c.c. models:
brakes, 128
carburetter, 55
electrical equipment, 133
engine overhaul, 36
frame and forks, 101
sparking-plugs, 55
technical data, 177-182
transmission, 68
tuning, 166
wheels, 122
Throttle-slide markings, 58
Timing:
ignition, 32, 34
valve, 64, 67
Timing gears, setting, 63
Timing-gear cover, oil leaks
in, 15
Timing-gear noise, 22
Tools, 40,46,48,52, 66, 169
Transmission, 68, 73
Trials models:
brakes, 152
electrical system, 152
flywheels, 150
front chaincase, 151
gearbox, 151
gear ratios, 151
rear-wheel, 128
Tuning the engine, 166
Valve grinding, 38
Valve guides, 18
looseness of, 17
Valve-rocker wear, 16
Valve springs:
coil type, 18
removal, 26
wear in, 15
Valve tappets and guides,
refitting, 51
Valve timing:
checking, 67
Scrambles engines, 161
setting, 64
Valve wear, 16
Wheel:
checking alignment, 104
quick detachable, 128
removing rear, 126
Scrambles models, 158
Wheels, 122
Wheel-hub arrangement, 125
Wire-wound pistons, 21
Wiring diagram:
1945-50 models, 146
1952-53 models, 147
1954-57 models, 148





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