REF•14Fault Finding
Brakes
Note:Before assuming that a brake problem exists, make sure that:
a) The tyres are in good condition and properly inflated (Chapter 1).
b) The wheel alignment (tracking) is correct (Chapter 10).
c) The vehicle is not loaded with weight in an unequal manner.
Vehicle pulls to one side during braking
m mIncorrect tyre pressures (Chapter 1).
m mWheel alignment (tracking) incorrect (Chapter 10)
m mUnmatched tyres on same axle.
m mRestricted brake lines or hoses (Chapter 9).
m mMalfunctioning caliper assembly (Chapter 9).
m mLoose suspension parts (Chapter 10).
m mLoose calipers (Chapter 9).
Noise (high-pitched squeal) when the brakes are
applied
m mFront and/or rear disc brake pads worn out. The noise comes from
the wear sensor rubbing against the disc. Renew the pads
immediately (Chapter 9).
Brake vibration (pedal pulsates)
Note:If the vehicle has ABS, it is normal for the brake pedal to pulsate
when the system is working.
m mExcessive lateral disc run-out (Chapter 9).
m mParallelism not within specifications (Chapter 9).
m mUneven pad wear - caused by caliper not sliding, due to improper
clearance or dirt (Chapter 9).
m mDefective disc (Chapter 9).
Excessive brake pedal travel
m
mPartial brake system failure (Chapter 9).
m mInsufficient fluid in master cylinder (Chapters 1 and 9).
m mAir trapped in system (Chapters 1 and 9).
Excessive pedal effort required to stop vehicle
m
mMalfunctioning brake servo unit (Chapter 9).
m mPartial system failure (Chapter 9).
m mExcessively-worn pads or shoes (Chapter 9).
m mCaliper piston stuck or sluggish (Chapter 9).
m mBrake pads contaminated with oil or grease (Chapter 9).
m mNew pads fitted and not yet seated. It will take a while for the new
material to seat against the disc.
Dragging brakes
m mMaster cylinder pistons not returning correctly (Chapter 9).
m mRestricted brakes lines or hoses (Chapters 1 and 9).
m mIncorrect handbrake adjustment (Chapter 9).
m mRear drum brake self-adjuster mechanism faulty (when applicable)
(Chapter 9).
Grabbing or uneven braking action
m mMalfunction of brake servo unit (Chapter 9).
m mBinding brake pedal mechanism (Chapter 9).
Brake pedal feels “spongy” when depressed
m
mAir in hydraulic lines (Chapter 9).
m mMaster cylinder mounting bolts loose (Chapter 9).
m mMaster cylinder defective (Chapter 9).
Brake pedal travels to the floor with little resistance
m
mLittle or no fluid in the master cylinder reservoir, caused by leaking
caliper piston(s), loose, damaged or disconnected brake lines
(Chapter 9).
Handbrake does not hold
m mHandbrake linkage incorrectly adjusted (Chapter 9).
m mHandbrake shoe linings worn out or contaminated (Chapter 9).
REF•27
REF
Index
R
Radiator - 3•3, 11•4
Radio - 12•4
Receiver-drier - 3•9
Regulator (voltage) - 5•10
Regulator (window) - 11•8
Relays - 12•2
Repair procedures - REF•8
Respraying - 11•3
Reversing light switch - 7B•4
Rocker arms - 2B•11
Rotor - 1•18
Routine maintenance and servicing- 1•1
et seq
Routine maintenance - air conditioning
system - 3•8
Routine maintenance - bodywork and
underframe - 11•1
Routine maintenance - hinges and locks -
11•4
Routine maintenance - interior trim - 11•2
Routine maintenance - upholstery and
carpets - 11•2
Rust holes in bodywork - 11•2
S
Safety first! - 0•5
Scalding - 0•5
Scratches in bodywork - 11•2
Screw threads and fastenings - REF•8
Seat belt - 11•9, REF•2
Seats - 11•9, REF•2
Selector lever - 7B•3, 7B•5
Selector shaft - 7A•2
Service Indicator (SI) board - 12•4
Service indicator light - 1•26
Servo - 9•2, 9•10, 9•11
Shock absorber - 1•21, 10•7, 10•8, 10•9,
REF•2, REF•3
Shoes - 9•7
Short-circuit - 12•2Silencer - 4•20
Slave cylinder - 8•3
Spares - REF•19
Spark plug - 1•17, 1•18
Speed sensors - 5•8
Springs - 10•7, 10•9, REF•3
Starter inhibitor - 7B•4
Starter motor - 5•12
Starter motor fault - REF•10
Starting system - 5•11
Steering box - 10•15
Steering column - 11•9, 12•3, REF•1
Steering gear - 10•12, 10•13, REF•3
Steering linkage - 10•14
Steering wheel - 10•16, REF•1
Stop-light switch - 9•13
Struts - 1•21, 10•6, 10•7
Sump - 2A•15
Supplemental Restraint System (SRS) -
12•8
Suspension and steering systems- 1•21,
1•22, 10•1et seq, REF•2, REF•3
Suspension and steering fault finding -
REF•15
Switches - 7B•4, 9•13, 12•3
T
Tailgate - 11•6
Tappets - 2B•11
Thermostat - 3•2
Thermotime switch - 4•17, 4•18
Throttle body - 4•16
Throttle linkage - 1•20
Throttle Position Sensor (TPS) - 6•3
Throttle positioner - 4•13, 4•14
Thrust arm - 10•5
Timing - 5•4
Timing belt - 1•26, 2A•8, 2A•9
Timing chain - 2A•6, 2A•8
Timing sensors - 6•4
Tools - REF•5, REF•7, REF•8
Top Dead Centre (TDC) for No 1 piston -
2A•3Torque converter - 7B•5
Towing - 0•8
Track rod ends - 10•13
Trailing arms - 10•10
Transmission - SeeManual transmission or
Automatic transmission
Trim - 11•2, 11•6
Tyres - 1•9, 1•14, 10•16, REF•4, REF•15
U
Underframe - 11•1
Universal joints - 8•8
Upholstery - 11•2
V
Vacuum hoses - 1•14
Vacuum servo - 9•10
Valve clearances - 1•19
Valve cover - 2A•4
Valves - 2B•10, 2B•11
Vehicle identification - REF•2, REF•19
Voltage checks - 12•1
Voltage regulator - 5•10
W
Washer fluid - 1•9
Water pump - 3•5
Weekly checks- 1•7et seq
Wheel alignment - 10•17
Wheel bearings - 10•8, 10•11, REF•3
Wheel changing - 0•8
Wheels - 10•16, REF•4
Windows - 11•8, 12•9
Windscreen - REF•1
Wiper blades - 1•23
Wiper motor - 12•7
Wiring diagrams- 12•9et seq
Working faclities - REF•7
REF•30
Almost ever y car you’ve ever loved, loathed or desired is gathered under one roof at the Haynes Motor
Museum. Over 300 immaculately presented cars and motorbikes represent ever y aspect of our motoring
heritage, from elegant reminders of bygone days, such as the superb Model J Duesenberg to curiosities like
the bug-eyed BMW Isetta. There are also many old friends and flames. Perhaps you remember the 1959 Ford
Popular that you did your courting in? The magnificent ‘Red Collection’ is a spectacle of classic sports cars
including AC, Alfa Romeo, Austin Healey, Ferrari, Lamborghini, Maserati, MG, Riley, Porsche and Triumph.
A Perfect Day Out
Each and ever y vehicle at the Haynes Motor Museum has played its part in the histor y and culture of
Motoring. Today, they make a wonderful spectacle and a great day out for all the family. Bring the kids, bring
Mum and Dad, but above all bring your camera to capture those golden memories for ever. You will also find
an impressive array of motoring memorabilia, a comfortable 70 seat video cinema and one of the most
extensive transport book shops in Britain. The Pit Stop Cafe serves ever ything from a cup of tea to
wholesome, home-made meals or, if you prefer, you can enjoy the large picnic area nestled in the beautiful
rural surroundings of Somerset.
The Museum is situated on the A359 Yeovil to Frome road at Sparkford, just off the A303 in Somerset. It is about 40 miles south of Bristol, and
25 minutes drive from the M5 intersection at Taunton.
Open 9.30am - 5.30pm (10.00am - 4.00pm Winter) 7 days a week, except Christmas Day, Boxing Day and New Years Day
Special rates available for schools, coach parties and outings Charitable Trust No. 292048
>John Haynes O.B.E.,
Founder and
Chairman of the
museum at the wheel
of a Haynes Light 12.
Cosworth Formula 1
car next to a 1934
Riley Sports.
Derham Tourster.
Only eight of these
magnificent cars were
ever built – this is the
only example to be found
outside the United
States of America
Preserving Our Motoring Heritage
