Stafford Vehicle Components

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Repair Kits for AC Mechanical Fuel Pumps

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Fuel pump repair kit information
DISMANTLING

Before commencing to dismantle the pump, thoroughly clean the exterior and make a file mark across the two flanges of the pump housing, as a guide when re-assembling.

Remove the six securing screws and separate the two halves of the main casting.

Turn the diaphragm, and pull rod assembly through an angle of 90°, when it may be disconnected from its securing slot in the connecting link and withdrawn. Remove diaphragm spring.

Withdraw the valve retainer screws from inside the upper casting and remove the retainer plate, valve assemblies, and valve retainer gasket.

On latest type pumps, valve retaining plates are omitted, the valve assemblies being a light tap fit into the casting.

CLEANING AND INSPECTION OF PARTS

All pump parts must be thoroughly cleaned in order to ascertain their condition. Wash valves, upper castings, filters and other parts which come into contact with the fuel in a clean paraffin bath separate from that used for dirtier components.

Upper and lower pump castings should be examined for cracks or damage. AC Repair Kits contain the items normally needed for fuel pump 'first aid' repair and all of these should be used on each job, the corresponding worn parts being discarded.

RE-ASSEMBLY

Replace valve retainer gasket, valves, valve retainer, and secure in position with two retaining screws, or tap new valves into recesses on latest pump types.

Replace filter gauze and cork seating gasket in position. Refit filter bowl.

Place the diaphragm spring in position in the pump body. Place the diaphragm assembly over the spring (the pump rod being downwards) and centre the upper end of the spring in the lower protector washer. When fitting the diaphragm assembly the small locating tabs should be at position 'A' shown in the illustration. The diaphragm assembly should then be pushed down until the flattened end of the pull rod enters the slot in the link and then turned a quarter turn to the left until the diaphragm locating tabs are at

position 'B' and then they will be in line with the locating mark cast on pump body. The sub-assemblies of the pump are now ready for fitting together, and this is carried out as follows:

Push the rocker arm towards the pump until the diaphragm is level with the body flanges.

Place the upper half of the pump into the proper position, as shown by the mark made on the flanges before dismantling. Install the cover screws and spring washers and tighten until the heads of the screws just engage the washers.

IMPORTANT

Before finally tightening the cover screws, the rocker arm must be held at its inward position preferably using a short piece of tube as shown in the illustration. Sufficient pressure must be exerted to draw the diaphragm inwards until its edges no longer protrude beyond the pump flanges.

While the rocker arm is so held, the cover screws should be securely tightened, working from side to side so as to keep the pressure even.

Identification of Fuel Pump Types
Fuel pump

UH - Standard type of pump for engines over 1,200 c.c. Detachable valve assemblies and visible side filter. Mounting stud holes arranged diagonally

FH - As UH but mounting holes side by side.

Fuel pump

UH - Standard type of pump for without filter. Mounting stud holes arranged diagonally

FH - As UE but mounting holes side by side.

Fuel pump

U - Standard type of pump with metal filter cover. Mounting stud holes arranged diagonally

UF - As U but mounting holes side by side.

Fuel pump

UG - Standard type of pump with glass filter bowl on top. Mounting stud holes arranged diagonally

FG - As UG but mounting holes side by side.

Fuel pump

T - Wearly type standard size with separate valves and pump. Mounting stud holes arranged diagonally

TF - As type T but glass filter bowl on top.

TF - As type T but mounting holes side by side.

Fuel pump

Y - Small size pump for engines up to 1,200 c.c. Mounting stud holes side by side

YD - As type Y but later design detachable valve with assemblies.

YJ - As YD but no filter.

Fuel pump

YE - Small size pump for Diesel fuel feed. Glass filter bowl, mounting holes side by side.

Fuel pump

CG - Standard size pump, flat link filter bowl on top, mounting holes side by side.

Fuel pump

VP - Standard size vertical diaphragm for Diesel fuel feed. Mounting stud holes side by side.

VPP - Vertical diaphragm / piston type for Diesel fuel feed.

Pipe Unions
Assembly Part No.
Comprising Union,
Nut and Sleeve
PARTICULARS OF UNION Union Nut Pipe Sleeve
(if used)
Remarks
Part Number Description Thread into Pump Thread for Union Nut
114795 114626 1/4" Straight, for pipe sleeve 1/8" x 27* 7/16" x 24 114527 114628
114796 114629 5/16" Straight, for pipe sleeve 1/8" x 27* 1/2" x 24 1524190 114631
114797 114633 5/16" Elbow, for pipe sleeve 1/8" x 27* 1/2" x 24 1524190 114631
114798 114632 1/4" Elbow, for pipe sleeve 1/8" x 27* 7/16" x 24 114627 114628
856810 5/16" Straight, for soldered nipple 1/8" x 27* 1/4" Gas Uses Washer 851011
1524114 5/16" Straight, for soldered nipple 1/2" x 20 1/4" Gas Uses Washer 855136
1524730 1/4" Straight, for pipe sleeve 1/2" x 20 7/16" x 24 114627 114628 Conical seat, in pump
1524729 5/16" Straight, for pipe sleeve 1/2" x 20 1/2" x 24 1524190 114631 Conical seat, in pump
1524328 1/4" Straight, for flared pipe 1/2" x 20 7/16" x 24 Uses Washer 855136
1524322 5/16" Banjo, for pipe sleeve 1/2" x 20 1/2" x 24 1524190 114631 Also uses -
Bolt 1524323
Washer 855136 (2)
* N.P.T.F. 1524555 1/4" Banjo, for pipe sleeve 1/2" x 20 7/16" x 24 114627 114628 Ditto
Engine Pad Gaskets
Fuel pump
835683 (.015)
856693 (.025)
for B, M, T, TG, U, UE, UG, UH Pumps
Fuel pump
835686
for B, T, U Push Rod Operated Pumps
Fuel pump
1524686
Fabric Oil Control Gasket for T, TG, U, UE, UG, UH Pumps
Fuel pump
1411094
for W, WE, WG, WH Pumps
Fuel pump
856794
for Y, YD, and YJ Pumps
Fuel pump
7950366
Fabric Oil Control for TF, UF, FE, FG, FH Pumps
Fuel pump
7950173
for TF, UF, FE, FG, FH Pumps
While every care has been taken in the compilation of this publication, no responsibility can be accepted for any inaccuracies which may have arisen.

Supplementary notes on AC Fuel/Vacuum Pump repair
Files


'The AC Fuel Pump' A 1954 article by LD Atkin on rebuilding AC fuel pumps
Files


Reconditioning Early AC Petrol Pumps 1956 article by E S Brown
Files


Spares Lists and Diagrams for AC Pump Types T, TF, TG, WE, WG, U, UF, UG, UE, Y
Files

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FPBD1 - AC Fuel Pump repair kit equivalent to BD1

From £35.15 (£42.18 inc. VAT @ 20%)

AC Fuel Pump repair / rebuild kit for all T, TF and TG type pumps fitted to Austin, Bedford, Commer, Ford, Hillman, Rover and Vauxhall. Kit contains (3 .1/4" outer diameter) - (1. 3/4" length...

Comparable to other manufacturer part numbers - BD1, 1524287, ES2901

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
Product Image

FPBD2 - AC Fuel Pump repair kit equivalent to BD2

From £30.65 (£36.78 inc. VAT @ 20%)

AC Fuel Pump repair / rebuild kit for all U, UE, UF, UG, FE, FG, FH, UH type pumps fitted to Austin, Bedford, Commer, Ford, Hillman, Singer, Standard, Sunbeam, Triumph Vitesse, 2000 and Vauxhall...

Comparable to other manufacturer part numbers - BD2, 1524507, ES2902, AEU2760, 18G8246

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD3 - AC Fuel Pump repair kit equivalent to BD3

From £31.03 (£37.24 inc. VAT @ 20%)

AC Fuel Pump repair / rebuild kit for all Y type pumps fitted to Austin, Bedford, Ford, Hillman, Standard and Vauxhall (1938 to 56). Kit contains diaphragm assembly, two hexagonal valves (3/8"...

Comparable to other manufacturer part numbers - BD3, 1524632, ES2903, E04A-9349

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD4 - AC Fuel Pump repair kit equivalent to BD4

From £27.65 (£33.18 inc. VAT @ 20%)

AC Fuel Pump repair / rebuid kit for all YD and YJ type pumps fitted to Austin, Ford cars, Hillman Imp, Sunbeam Imp Sport and Stiletto, Thames Light Vans to '60, Standard 8 and 10 HP, Triumph...

Comparable to other manufacturer part numbers - BD4, 7950298, ES2906, 100E-9349

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
Product Image

FPBD5 - AC Fuel Pump repair kit equivalent to BD5

From £31.45 (£37.74 inc. VAT @ 20%)

AC Fuel pump rebuild / repair kit for type A, B, G, L, N and P pumps. Early fuel pump (1930 to '35) repair kit for Austin, Bedford, Hillman, Humber, Rover, Jowett, Singer and Vauxhall. Kit...

Comparable to other manufacturer part numbers - BD5, 1524089, ES2907

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD6 - AC Fuel Pump repair kit equivalent to BD6

From £27.34 (£32.81 inc. VAT @ 20%)

AC Fuel Pump rebuild/repair kit for UE and FG type pumps fitted to Dodge England petrol models 1952/63, Ford New Anglia, Classic, Capri 1961/64, Ford Cortina, Corsair, 5,7 cwt. Vans 1961/64,...

Comparable to other manufacturer part numbers - BD6, 1524978, ED2922, E93A-9349, E36-Z-1

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD54 - AC Fuel Pump repair kit equivalent to BD54

From £31.34 (£37.61 inc. VAT @ 20%)

AC Fuel Pump rebuild repair kit for W, WE, WG and WH type pumps - FUEL SIDE. Kit contains diaphragm assembly, two valve assemblies, two bowl gaskets, engine pad gasket, valve plate and diaphragm...

Comparable to other manufacturer part numbers - D54, 5591843, ES2904, E195-Z-1

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD8 - AC Fuel Pump repair kit equivalent to BD8

From £78.22 (£93.86 inc. VAT @ 20%)

AC Rebuild / Repair Kit for VACUUM SIDE of WE, WG and W type fuel pumps. Applications include Bedford TA series '53 to '56, Bedford S Type trucks '55 to '56 and Ford 10/12 and 15 cwt vans '58 to...

Comparable to other manufacturer part numbers - BD8, 1524980, ES2914

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD14 - AC Fuel Pump repair kit equivalent to BD14

From £33.76 (£40.51 inc. VAT @ 20%)

AC Fuel pump rebuild / repair kit for VP type fuel pumps. Many commercial applications including Ford, Fordson, Perkins, Simms Motor Units. Kit contains diaphragm assembly, circular diaphragm, two...

Comparable to other manufacturer part numbers - ES2917, 7950698, FPRD6

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD15 - AC Fuel Pump repair kit equivalent to BD15

From £31.55 (£37.86 inc. VAT @ 20%)

AC Fuel pump rebuild / repair Kit for UF (special) type fuel pumps. Applications include Auston, BMC, Morris commercialCommer, Massey Ferguson, Perkins and Landrover Series II Petrol and Diesel...

Comparable to other manufacturer part numbers - BD15, 7950706, ES2918

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps
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FPBD17 - AC Fuel Pump repair kit equivalent to BD17

From £28.30 (£33.96 inc. VAT @ 20%)

AC Fuel pump rebuild / repair Kit for YD and YJ type fuel pumps. Bedford TC, TD, TJ, TK, VA, Ford Industrial, Perkins and many more commercial application. Full kit unavailable, please see part...

Comparable to other manufacturer part numbers - BD17, 7950706, ES2918

Stafford Vehicle Components - Fuel System Components - Repair Kits for AC Mechanical Fuel Pumps