BSA B50T Victor 1971 Manuals

Manuals and User Guides for BSA B50T Victor 1971. We have 1 BSA B50T Victor 1971 manual available for free PDF download: Workshop Manual

BSA B50T Victor 1971 Workshop Manual (173 pages)

250 cm3 & 500 cm3

Brand: BSA | Category: Motorcycle | Size: 18.42 MB

Introduction
9
Engine and Frame Numbers
9
Factory Service Arrangements
10
Replacement Parts
10
Repairs
10
Technical Advice
10
Proprietary Parts
11
Service Arrangements
12
Battery
13
To Fill and Charge the Battery
13
Dilute Sulphuric Solution
14
Contents
15
General Data
16
Index
16
Weights
28
Gear Ratio Calculation
28
Lubrication
29
Recommended Lubricants
32
Approved Lubricants
32
General Engine Lubrication Diagram
33
Engine Lubrication
34
Changing the Oil and Cleaning the Filters
34
Oil Pressure and Non-Return Valves
35
External Oil Filter
35
Non-Return Valve
35
Sump Filter
35
Contact Breaker
36
Low Oil Pressure
36
Crankcase Oil Pipes
36
Crankcase Breather
36
Gearbox Lubrication
37
Primary Drive
37
Gearbox Oil Level
37
Swinging Arm
38
Wheel Bearings
38
Primary Drive Lubrication
38
Control Cables
38
Rear Chain
39
Engine
40
B25 Engine Exploded
42
B50 Engine Exploded
43
Description
44
Decarbonising
44
Preparing to Decarbonise
45
Removing the Cylinder Head and Rocker Box
45
Pushrods
46
Removing the Valve Springs
46
Valve Rockers
46
Valve Guides
47
Valves
47
Pocketed Valve
47
Removing Carbon Deposits
47
Reassembling the Cylinder Head
48
Valve Grinding
48
Cylinder Barrel
48
Grinding in Valve
48
Removing Cylinder Barrel
49
Removing the Piston
49
Piston Rings
49
Checking Piston Ring Grooves
49
Small-End Bush
50
Reassembly after Decarbonising
50
Replacing Cylinder Barrel
50
Checking Valve Clearances
51
Location of Pushords
51
Removal and Replacement of the Engine Unit
52
Valve Rocker Adjustment
52
Transmission
53
Removing Engine Unit
53
Removing Primary Drive Cover
54
Clutch Dismantling
54
Generator Removal
54
Clutch Centre and Cush Drive
55
Clutch Chainwheel
55
Gearbox Sprocket
55
Inspecting the Clutch
55
Primary Chain Alignment
56
Primary Case Back Plate
56
Checking Alignment of the Primary Drive
56
Reassembling the Primary Drive
57
Fitting Primary Drive
57
Contact Breaker Points
59
Ignition Timing
59
Piston Position
59
Removing the Contact Breaker and Auto-Advance Unit
59
Setting the Ignition Timing Statically
60
Ignition Timing Light
60
Checking Ignition Timing with a Stroboscope
61
Using Pliers to Set the Cam
61
Oil Pump Removal
62
Timing Gears
62
Tappets
62
Removing Inner Cover
62
Dismantling the Oil Pump
63
Rebuilding the Oil Pump
63
Oil Pump Exploded
63
Refitting the Oil Pump
64
Timing Marks
64
Tachometer Drive
65
Correct Fitting of Tappets
65
Gearbox Dismantling
66
Gearchange Mechanism
66
Kickstart Ratchet Assembly
66
Selector Forks
66
Gearbox Reassembly
67
Gear Cluster Exploded
68
Fitting the Gearchange Return Spring
69
Fitting the Plunger Quadrant
69
Gearchange Spring Adjustment
70
Sequence of Gearchanging
71
Neutral Gear Position
71
First Gear Position
72
Second Gear Position
73
Third Gear Position
74
Fourth Gear Position
75
Splitting the Crankcase Halves
76
Parting the Crankcase Halves
76
Main Bearings
77
Big End and Flywheel Assembly
77
Flywheel Balancing
78
Refitting the Connecting Rod
78
Knife-Edge Roller
78
Flywheel Truing
79
Checking the Flywheels
79
Reassembling the Crankcase
80
Box for Supporting Crankcase
80
Carburettor
81
The Amal Concentric Carburettor Exploded
82
Dismantling and Rebuilding the Carburetor
83
Inspecting Carburetor Components
84
Hints and Tips
84
Throttle Cable
84
Fuel Feed
84
Tracing Faults
85
Banging in Exhaust
85
Excessive Fuel Consumption
85
Air Cleaner
85
To Cure Richness
86
To Cure Weakness
86
Variable Settings and Parts
86
Sequence of Tuning
86
Tuning the Carburetor
87
Pilot Air Screw
87
Main Jet
87
Needle and Needle Jet
87
Carburetor Air Cleaner
88
3Rd Throttle Cut-Away
88
4Th Needle
88
Frame and Fittings
89
Frame Dimensions
90
Frame Alignments
91
Testing for Oil Leakage
91
Steering Head Mandrel
91
Setting up the Frame
92
Refitting the Bearings
93
Removing the Bearings
93
Front Mudguard
94
Checking Alignment of the Swinging Arm
94
Trail and MX Models
94
Street Scrambler Models
95
Seat
96
Chainguard
96
Battery Carrier and Tool Tray
96
Rear Shock Absorbers
97
Prop Stand
97
Replacing the Prop Stand Spring
97
Cam Ring Positions
97
Centre Stand
98
Crankcase Shield
98
Rear Brake Pedal
98
Fuel Tank
98
Front Brake Cable
99
Fitting a Clutch Cable
99
Clutch Cable
100
Exhaust Valve Lifter Cable
100
Front Forks
101
Adjusting Steering Head Bearings
102
Testing the Steering Head for Play
102
Steering Head Adjustment
102
Renewing Steering Head Bearings
103
Reassembling the Steering Head
103
Dismantling the Steering Head
103
Fitting New Steering Head Races
103
Dismantling the Fork Legs
104
Changing the Fork Springs
104
Dismantling the Damping Assembly
104
Damper Valve Retaining Screw
104
The Oil Seals
105
Fork Leg Explained
105
Rebuilding the Fork Legs
106
Removing Oil Seal
106
Fork Alignment
107
Alternative Method
107
Bottom Yoke Twisted
107
Offset Steering Column
107
Wheels, Brakes and Tyres
109
Front Wheel with 6 Brake
110
Brake Shoes
110
Wheel Removal
110
Wheel Replacement
110
Brake Shoe Adjustment
111
Front Wheel Replacement
111
Front Brake Shoe Adjustment
111
Front Hub Dismantling
112
Rear Wheel
113
Removal of Rear Wheel
113
Rear Hub
113
Rear Chain Adjustment
114
Rear Wheel Sprocket
114
Renewing Brake Linings
115
Peening-Over Rivets
115
Chopping out the Rivets
115
Wheel Building
116
Wheel Balancing
116
Security Bolts
117
Balance Weights
117
Tyre Creeping
117
Security Bolt
117
Wheel Alignment
118
Removing and Refitting Tyres
118
Tyre Removal
118
Checking Alignment
118
Removing the First Bead
119
Removing the Tyre
119
Tyre Replacement
120
Commencing to Fit the Tyre
120
Tyre and Tube Assembled Ready for Fitting
120
Fitting the First Bead
120
Tyre Maintenance
121
Completing Fitting of the Second Bead
121
Completing Fitting of the First Bead
121
Front Tyre
122
Rear Tyre
122
Electrical System
123
Electrical Box
125
Battery Inspection and Maintenance
125
Alternator
125
The Ignition System
126
Charging the Battery
126
Routine Maintenance
126
Checking the Low Tension Circuit for Continuity
126
Ignition Coil
127
Bench Testing Ignition Coil
127
Ignition Coil Test Rig
127
2 MC Electrolytic Capacitor
128
Checking the High-Tension Circuit
128
Terminal Identification
128
Sparking Plug
129
Periodic Check
129
Efficiency Check
129
Service Notes
129
Sparking Plug Diagnosis
130
Charging System
131
Checking Alternator Output
131
Rectifier Maintenance and Testing
131
Testing the Rectifier on the Machine
132
Bench Testing the Rectifier
132
Refitting the Rectifier
132
Checking the Charging Circuit for Continuity
133
Rectifier Test Sequence
133
Constructing a 1 Ohm Load Resistor
134
Zener Diode Charge Control
134
Electric Horn
135
Direction Indicator Lamps
135
Maintenance
135
Checking Performance of the Zener Diode
135
The Master Ignition Switch
136
Handlebar Switch Functions
136
The Left Handlebar Switch Connections
136
The Right Handlebar Switch Connections
136
Headlamp
137
Tail and Stop Lamp Unit
137
Beam Adjustment
137
Right Handlebar Switch Connections
137
Other Light Units
138
Stop and Tail Lamp Dismantled
138
Wiring Diagram
139
Chains
140
Primary Chain
141
Chain Measurement
141
Measuring Chain Wear
141
Chain Alterations and Renewals
142
Chain and Sprocket Inspection
142
Worn Sprocket
142
Chain Alterations
142
Correct Fitting of the Connecting Link
143
Torque Wrench Settings
144
Abbreviations
144
How to Calculate the Revised Torque Setting
145
Torque Wrench Extension
145
Service Tools
146
Useful Tables
156
Inches to Millimeters
157
Decimal Fractions of an Inch to Millimeters
157
Fractions of an Inch to Decimals and Millimeters
158
Millimeters to Inches
159
Decimal Fractions of a Millimetre to Inches
159
Drill Sizes
160
Letter Drills
160
Number Drills
160
Screw Threads
161

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BSA B50T Victor 1971 Manuals

BSA B50T Victor 1971 Workshop Manual (173 pages)

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