Front brakes

Front Drum Brakes
Single Cylinder Brakes
1959-64, All Models Except Cooper and Cooper S
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
1	17H7615	BACKPLATE ASSEMBLY, RH	1	1959-63.
	17H2476	BACKPLATE ASSEMBLY, RH	1	1963-64; may be used on earlier models.
	17H7616	BACKPLATE ASSEMBLY, LH	1	1959-63.
	17H2477	BACKPLATE ASSEMBLY, LH	1	1963-64; may be used on earlier models.
2	SH605051	SCREW, backplate to swivel hub	6
3	LWZ205	WASHER, locking	6
4	GBS701	BRAKE SHOE SET	1	Car set of four 1 1/4" wide brake shoes.
5	GBK1834	SPRING SET, shoe return	1	Car set of four springs.
6	17H8092	SPRING, shoe return, cylinder end	2	Included in spring set.
7	17H7621	SPRING, shoe return, adjuster end	2	Included in spring set.
8	17H7619	WEDGE, screw, adjuster	2
9	17H7618	TAPPET, adjuster	4
There's sometimes confusion when customers place orders as to what the component parts of the brake shoe adjuster should be called. Please note that the two parts that push against the brake shoes should be referred to as tappets, not wedges. The wedge is the screwed part that forces the tappets apart.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
10	GWC101	WHEEL CYLINDER ASSEMBLY	2
11	GRK2013	REPAIR KIT, wheel cylinder	2
12	513118	BLEED SCREW, cylinder, 1/4 UNF	2	Included in cylinder assembly.
13	37H4642	GASKET, wheel cylinder to backplate	2
14	17H7949	'E' CLIP, wheel cylinder to backplate	2
15	CCT001	TOOL, Lockheed, 'E' clip fitting	1	Makes fitting 'E' clips somewhat easier.
16	GBD105	DRUM, brake	2
17	CMZ407	SCREW, brake drum to drive flange	4

Twin Cylinder Brakes ('Twin Leading Shoe' System)
1964-84, All Models Except Cooper, Cooper S and 1275 GT
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
18	17H8145	BACKPLATE ASSEMBLY, RH	1	1964-67.
	37H2013	BACKPLATE ASSEMBLY, RH	1	1967-84.
	17H8159	BACKPLATE ASSEMBLY, LH	1	1964-67.
	37H2014	BACKPLATE ASSEMBLY, LH	1	1967-84.
19	21A1299	SCREW, backplate to swivel hub	6
20	LWZ205	WASHER, locking	6
21	GBS733AF	BRAKE SHOE SET	1	Car set of four 1 1/2" wide brake shoes.
22	GBK1733	SPRING SET, shoe return	1	Car set of four return springs.
23	AAU8243	SPRING, shoe return, RH and LH	4	Included in spring set.
24	GWC102	WHEEL CYLINDER, RH brake, 13/16" bore	2	1964-67.
	GWC126	WHEEL CYLINDER, RH brake, 15/16" bore	2	1967-84.
	GWC103	WHEEL CYLINDER, LH brake, 13/16" bore	2	1964-67.
	GWC127	WHEEL CYLINDER, LH brake, 15/16" bore	2	1967-84.
25	8G8816	REPAIR KIT, wheel cylinder	4	For 13/16" bore cylinders.
	GRK2002	REPAIR KIT, wheel cylinder	4	For 15/16" bore cylinders.
26	3H2428	BLEED SCREW, cylinder, 3/8 UNF	4
27	37H3833	GASKET, wheel cylinder to backplate	4
28	SH605051	SCREW, long, wheel cylinder to backplate	4
29	LWZ205	WASHER, locking	4
30	7H7520	SCREW, short, wheel cylinder to backplate	4
31	LWZ204	WASHER, locking	4
32	27H3753	SPRING, shoe to cylinder piston	4
33	GBD105	DRUM, brake	2
34	CMZ407	SCREW, brake drum to drive flange	4

Front Disc Brakes
7" Diameter Discs
1961-69, Cooper Models (997cc and 998cc)
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
35	27H4652	CALLIPER ASSEMBLY, RH	1	1961-63, 997cc models; uses 2 1/8" wide pads.
	27H4654	CALLIPER ASSEMBLY, RH	1	1963-69, late 997cc and 998cc models; uses 2 3/8" wide pads.
	27H4653	CALLIPER ASSEMBLY, LH	1	1961-63, 997cc models; uses 2 1/8" wide pads.
	27H4655	CALLIPER ASSEMBLY, LH	1	1963-69, late 997cc and 998cc models; uses 2 3/8" wide pads.
36	17H8764	O RING, fluid channel	2
This O ring may only be accessed by splitting the calliper halves apart - a task which should only be undertaken if you have the experience and workshop environment suitable to do so.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
37	27H8801	BOLT, self locking, calliper assembly	4	Supercedes original bolt and lock tab.
38	17H7913	PISTON, calliper	4
39	GRK5009	SEAL KIT, calliper piston	2
40	17H7917	PLUG, screwed	2
41	3H2428	BLEED SCREW, 3/8 UNF	2
42	GBP101	BRAKE PAD SET, with retaining springs, standard	1	For 1961-63 callipers; car set of four pads.
43	GBP102	BRAKE PAD SET, standard	1	For 1963-69 callipers; car set of four pads.
	C-AHT223	BRAKE PAD SET, fast road/race (M1144 material)	1	For 1963-69 callipers; car set of four pads.
44	17H7957	SPRING, pad retaining	2	For 1961-63 callipers.
45	ZPS422	SPLIT PIN, pad retaining	4
46	17H2173	SHIM, anti-squeal	4	For 1961-63 callipers; not required with modern pad materials.
47	17H8212	SHIM, anti-squeal	4	For 1963-69 callipers; not required with modern pad materials.
48	BTA193	DISC ASSEMBLY	2
49	21A2064	STUD, wheel	8	Included in disc assembly.
50	CMZ407	SCREW, brake disc to drive flange	8
51	21A970	DUST COVER, disc, RH upper	1
52	21A968	DUST COVER, disc, RH lower	1
	21A971	DUST COVER, disc, LH upper	1
	21A969	DUST COVER, disc, LH lower	1
53	BTA1208	BRACKET, dust cover support, RH	1	Replaces original unhanded item.
	BTA1209	BRACKET, dust cover support, LH	1	Replaces original unhanded item.
54	PMZ307	SCREW, dust cover assembly	4
55	WL700101	WASHER, locking	4
56	FNZ103	NUT	4
57	ATB7258	BOLT, calliper to swivel hub	4
58	LWZ206	WASHER, locking	4

7 1/2" Diameter Discs
1963-71, Cooper S; 1969-74, 1275 GT
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
59	27H4656	CALLIPER ASSEMBLY, RH	1
	27H4656P	CALLIPER ASSEMBLY, RH	1	Non-genuine.
	27H4657	CALLIPER ASSEMBLY, LH	1
	27H4657P	CALLIPER ASSEMBLY, LH	1	Non-genuine.
60	17H8764	O RING, fluid channel	2
This O ring may only be accessed by splitting the calliper halves apart - a task which should only be undertaken if you have the experience and workshop environment suitable to do so.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
61	17H8766	BOLT, self locking, calliper assembly	4
62	17H8626	PISTON, calliper	4
63	GRK5006	SEAL KIT, calliper piston	2
64	17H8629	PLUG, screwed	2
65	3H550	WASHER, sealing	2
66	3H2428	BLEED SCREW, 3/8 UNF	2
67	GBP103	BRAKE PAD SET, standard	1	Car set of four pads.
	MLB20M1144	BRAKE PAD SET, fast road/race (M1144 material)	1	Car set of four pads.
	C-8G8993	BRAKE PAD SET, race (carbon metallic material)	1	Car set of four pads.
	EBC2102	BRAKE PAD SET, race (EBC 'Green Stuff' Kevlar)	1	Car set of four pads.
68	PS610241	SPLIT PIN, pad retaining	4
69	17H8630	SHIM, anti-squeal	4	Not required with modern pad materials.
70	21A1265	DISC ASSEMBLY	2
71	21A2064	STUD, wheel	8	Included in disc assembly.
72	CMZ410	SCREW, brake disc to drive flange	8
73	21A1273/1	DUST COVERS, disc, upper and lower, RH, pair	1
74	21A1273	DUST COVER, disc, RH upper	1
75	21A1271	DUST COVER, disc, RH lower	1
	21A1274/2	DUST COVERS, disc, upper and lower, LH, pair	1
	21A1274	DUST COVER, disc, LH upper	1
	21A1272	DUST COVER, disc, LH lower	1
76	BTA1208	BRACKET, dust cover support, RH	1	Later type; replaces early unhanded item.
	BTA1209	BRACKET, dust cover support, LH	1	Later type; replaces early unhanded item.
77	PMZ307	SCREW, dust cover assembly	4
78	WL700101	WASHER, locking	4
79	FNZ103	NUT	4
80	53K1048	BOLT, calliper to swivel hub	4
81	LWZ206	WASHER, locking	4

8.4" Diameter Standard Discs
1974-80, 1275 GT; 1984 On, All Models
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
82	GBC141	CALLIPER ASSEMBLY, RH	1
	GBC141P	CALLIPER ASSEMBLY, RH	1	Non-genuine.
	GBC138	CALLIPER ASSEMBLY, LH	1
	GBC138P	CALLIPER ASSEMBLY, LH	1	Non-genuine.
83	17H7679	O RING, fluid channel	2
This O ring may only be accessed by splitting the calliper halves apart - a task which should only be undertaken if you have the experience and workshop environment suitable to do so.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
84	27H4353	BOLT, self locking, calliper assembly	4
85	114713	PISTON, calliper	4
86	GRK5008	SEAL KIT, calliper piston	2
87	17H7917	PLUG, screwed	2
88	3H2428	BLEED SCREW, 3/8 UNF	2
89	GBP90307AF	BRAKE PAD SET, standard	1	Original equipment; car set of four pads.
	GBP281	BRAKE PAD SET, standard	1	Non-genuine; car set of four pads.
	MLB37M1144	BRAKE PAD SET, fast road/race (M1144 material)	1	Car set of four pads.
	GBP281FR	BRAKE PAD SET, fast road (Pagid)	1	Recommended for Pagid grooved discs; car set of four pads.
	EBC2127	BRAKE PAD SET, race (EBC 'Green Stuff' Kevlar)	1	Car set of four pads.
90	BHK123	FITTING KIT, brake pads	1	Car set of four pins and two pad retaining springs.
91	GBK1010	SPLIT PIN KIT, pad retaining	1	Car set of four pins; included in fitting kit.
92	BPP5	SPLIT PIN, pad retaining	4
93	21A2612	DISC, brake, standard	2
	21A26128G	DISCS, brake, Pagid, 8 grooves, pair	2	Recommend use of GBP281FR pads with grooved discs.
	21A261216G	DISCS, brake, Pagid, 16 grooves, pair	2	Recommend use of GBP281FR pads with grooved discs.
94	BTA370	BOLT, brake disc to drive flange	8
95	HMP441032	DUST COVERS, disc, upper and lower, RH, pair	1
	HMP441033	DUST COVERS, disc, upper and lower, LH, pair	1
96	21A2613	DUST COVER, disc, RH upper	1
	21A2617	DUST COVER, disc, LH upper	1
97	21A2614	DUST COVER, disc, RH lower	1
	21A2618	DUST COVER, disc, LH lower	1
98	BTA1208	BRACKET, dust cover support, RH	1
	BTA1209	BRACKET, dust cover support, LH	1
99	PMZ307	SCREW, dust cover assembly	4
100	WL700101	WASHER, locking	4
101	FNZ103	NUT	4
102	53K1048	BOLT, calliper to swivel hub	4
103	LWZ206	WASHER, locking	4

8.4" Diameter Ventilated Discs
Austin/MG Metro Type
For many years this has been a popular and easy-to-fit upgrade for Minis with 12" wheels, requiring the drive flanges and brake hoses only to be changed in
order to fit the vented discs and four-pot callipers (see Drive Shafts and Drive Flanges section for the special drive flanges, plus the Brake Systems sections
for the hoses). A very small amount of modification may also be necessary to the disc dust cover brackets. Metro vented discs and four-pot callipers will
also fit other models as well, so long as 10" wheels are not intended to be retained. New outer C.V. joints and swivel hubs will also be required if converting
from front drum brakes.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
104	GBC2031	CALLIPER ASSEMBLY, RH	1
	GBC2030	CALLIPER ASSEMBLY, LH	1
105	SAAS1021	PISTON, calliper	8
106	GRK5003	SEAL KIT, calliper pistons	2
107	BAU1790	BLEED SCREW, metric	6
108	GBP258AF	BRAKE PAD SET, standard	1	Car set of four pads.
	EBC2627	BRAKE PAD SET, race (EBC 'Green Stuff' Kevlar)	1	Car set of four pads.
109	GBK1025	FITTING KIT, brake pads	1	Car set of four pins and two pad retaining springs.
110	BPP18	SPLIT PIN, pad retaining	4	Included in fitting kit.
111	GBD496	DISC ASSEMBLY, ventilated, RH and LH	2	Later, non-unidirectional design Metro discs.
112	ADU6472	SCREW, brake disc to drive flange	8
	SH110201M	SCREW, brake disc to drive flange	8	Alternative.
113	ERA1128	BOLT, self-locking, calliper to swivel hub	4

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Front brakes

BACKPLATE-FRONT BRAKES-SINGLE LEADING-LH-'63-'64

BACK PLATE-FRONT BRAKES-SINGLE LEADING-LH '59-'63

BACKPLATE-FRONT BRAKES-SINGLE LEADING-RH-'63-'64

BACKPLATE-FRONT BRAKES-SINGLE LEADING-RH-'59-'63

WHEEL STUD-DRUM,COOPER & 'S' FRONT/STD REAR 40mm overall

WASHER-SPRING,3/8''

SET SCREW- 5/16 UNF x 5/8''

SCREW-COUNTERSUNK-1/4 UNF x 5/8''

CALIPER-BRAKES-997 COOPER-'61-'63 LH

WASHER-SPRING, 5/16''

NUT-10/32" UNF 5/16'' DIA. HEAD

WASHER-SPRING 10/32''

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