Somerford Mini Ltd. Ordering Parts Using This Catalogue

Oil Filters and Oil Pipes
No. Part No. Description Qty. Remarks No. Part No. Description Qty. Remarks
1973-92 Spin-On Cartridge Assembly (continued)
56 GUG705553GM GASKET, oil filter head to cylinder block 1
57 CHS2613 STUD, oil filter head to cylinder block 2
58 FNZ106 NUT 2
59 LWZ306 WASHER, locking 2
60 PWZ106 WASHER, plain 2
61 88G538 PIPE ASS’Y, oil filter head to cylinder 1 1973-80 (pre-A Plus).
block
TAM2106 PIPE ASS’Y, oil filter head to cylinder 1 1980-92 (A Plus).
block
62 TCZ106 ADAPTOR, pipe to oil filter head 1 1959-88.
TAM2119 ADAPTOR, pipe to oil filter head 1 1988-92; will replace TCZ106.
63 2A715 BOLT, banjo, pipe to cylinder block 1
64 AED172 WASHER, sealing banjo union 2 Original copper washer.
LYF10017 WASHER, sealing banjo union 2 Alternative bonded metal/rubber
washer.
1991-96 Spin-On Cartridge Assemb ly
(single point injection engines 1991-96 and
1275cc carburetter engines 1992-94)
65 GFE166 CARTRIDGE, oil filter, with seal 1 Original equipment.
GFE21 CARTRIDGE, oil filter, with seal 1 Premium ‘Hitech’ type.
66 LPX10026 HEAD ASSEMBLY, oil filter 1 Casting mark ed LPX10027.
67 GUG705553GM GASKET, oil filter head to cylinder block 1
68 LYG10008 BOLT, flanged, oil filter head to cylinder 2
block
69 LQP10033 PIPE, oil filter head to cylinder block 1
70 LYH10014 NUT, tube, pipe union 2
71 LZB10017 SEAL, rubber, pipe 2
1997 On Spin-On Cartridge Assembly
(multi point injection and single point injection engines)
72 LPW100180 CARTRIDGE, oil filter, with seal 1 Original equipment.
GFE26 CARTRIDGE, oil filter, with seal 1 Premium ‘Hitech’ type.
73 CAM5331 ADAPTOR, oil filter to cylinder block 1
By-Pass Oil Filters
(Automatic Gearbox Models)
Purolator By-Pass Unclamped Element Assembly
1964 (without pressure switch)
1965 On (with pressure switch)
For details of the workings of by-pass unclamped paper element type filters and the ‘filter condition
warning’ pressure switch, please see the manual gearbox section on the previous page. On automatic
Minis the replaceable paper element type filter (larger than the version used on manual cars) lasted
throughout the model’s production life , unlike the manual gearbox models which changed over to the
infinitely more simple spin-on filter in 1973.
Also unlike manual models, the filter is attached to the gearbox (on the front cover) on Mini automatics,
the principle being to supply the freshly filtered oil to the delicate valve block through the gear selector
valve and the gearbox regulator valve before it reaches the engine via the torque converter oil supply
route and the engine’s oil pressure relief valve.
This means that because the oil pump on a Mini automatic is still in the engine, as in a manual Mini,
the oil has to be drawn up from the sump (gearbox), through the pump and then back down to the
gearbox again to reach the oil filter. The first automatics of 1964-65 had an adaptor and pipe running
from what would have been the oil filter head mounting face on a manual engine down to the gearbo x.
From mid-1965 this was dispensed with in favour of a simple, short oil pipe running internally between
the cylinder block and gearbox (which can be found in the Automatic Transmission section of the
Somerford Mini Catalogue) leaving subsequent automatic-type engines wearing a blanking plate where the
adaptor had been fitted. At the same time an external oil supply pipe more similar in design to that
used on a manual power unit was also fitted.
When changing the oil on a Mini automatic, note that while the total capacity of engine and gearbox is
13 pints, only approximately 9 pints can be drained and refilled. The remainder is ‘trapped’ b y the
gearbox low pressure valve, which is shut when the engine is not turning, in the torque converter (the
idea being to stop drain back from the torque converter to the sump, which would otherwise result in a
‘dry’ torque converter and no drive when the engine is restarted).
When using the gearbox dipstick to check the oil level, the marks on the dipstick are calibrated for a
full level of 9 pints, with a one pint difference between the minimum and maximum marks. Remember
that unlike a manual power unit where you can simply open the bonnet and check the level with the
dipstick, an automatic power unit must be run for a couple of minutes and then left to stand for a
minute before checking the oil level. Failure to do so results in a substantially inaccurate reading.
Also note that when changing the oil filter, the filter sump (or ‘bowl’) lies on its side on the front of the
Mini automatic gearbox, rather than being vertical (as is usually the case with oil filters). As it is removed
from the filter head a considerable quantity of oil will flow out - either straight onto the garage floor, or
if you’re prepared, into a container on the garage floor. If you’ve done the job before , you will already
know this. If you haven’t, this note has just saved you from a nasty surprise.
74 GFE104 ELEMENT, oil filter, with seal 1
75 12A1591 SEAL, sump to head 1 Included with element.
76 27H6800 HEAD ASS’Y,oil filter, without pressure 1 1964.
switch
37H1480 HEAD ASS’Y,oil filter, with pressure switch 1 1965 on.
77 37H140 SUMP, oil 1
78 500439 PLATE, pressure 1
79 7H28 SEAL, pressure plate, rubber 1
80 PWZ106 WASHER, plain 1
81 500319 SPRING, pressure plate 1
82 27H6799 BOLT, centre 1
83 17H1172 COLLAR, sump to seal 1
84 508380 SEAL, bolt 1
85 27H2573 CIRCLIP, bolt retaining 1
Oil Filter Head Fixings
86 GUG705552GM GASKET, oil filter head to gearbox front 1
cover
87 22A1001 O RING, oil filter head 2 1964-69; if required.
88 BH507131 BOLT, oil filter head to gearbox front 1
cover, shor t
TAM1188 BOLT, oil filter head to gearbox front 1 Alternative to BH507131.
cover, shor t
89 BH507301 BOLT, oil filter head to gearbox front 1
cover, long
90 LWZ307 WASHER, locking 2
Cylinder Block to Gearbox Case (Oil Filter) Adaptor
1964 (848cc)
91 22A1197 ADAPTOR, oil, cylinder block to gearbox 1
case
92 22A811 O RING, adaptor to gearbox case 1
93 88G402 GASKET, adaptor to cylinder block 1
94 SH506101 SCREW, adaptor to cylinder block 2
Cylinder Block to Gearbox Case (Oil Filter) Pipe
1965-92 (848 and 998cc)
95 88G539 PIPE ASS’Y,oil, cylinder block to gearbox 1 1965-80 (pre-A Plus).
case
AHU2396 PIPE ASS’Y,oil, cylinder block to gearbox 1 1980-92 (A Plus).
case
96 22G791 ADAPTOR, pipe to gearbox case 1 1965-88.
DAM7601 ADAPTOR, pipe to gearbox case 1 1988-92; will replace 22G791.
97 22A1563 O RING, adaptor to gearbox case 1
98 2A715 BOLT, banjo, pipe to cylinder block 1
99 AED172 WASHER, sealing banjo union 2 Original copper washer.
LYF10017 WASHER, sealing banjo union 2 Alternative bonded metal/rubber
washer.
100 22A1203 PLATE, blanking cylinder block oil filter 1
face
101 88G402 GASKET, blanking plate 1
102 SH506071 SCREW, blanking plate to block 2
103 12G1058 WASHER, sealing 2
Cylinder Block to Gearbox Case (Oil Filter) Pipe
1992 On (1275cc)
104 LQP10038 PIPE ASS’Y,oil, cylinder block to gearbox 1
case
105 LYH10014 NUT,tube, pipe union 1
106 LZB10017 SEAL, rubber, pipe 1
107 DAM7601 ADAPTOR, pipe to gearbox case 1
108 22A1563 O RING, adaptor to gearbox case 1
109 TGW100020 ADAPTOR, gearbox case 1 1997 on.
110 22A1563 O RING, adaptor to gearbox case 1 1997 on.
111 LZB100350 SEAL, adaptor 1 1997 on.
Tel. 01249 721421 Fax. 01249 721316 www.somerford-mini.co.uk
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