Old Britts
Bottom End Rebuild Estimate, 850 MK3, ESTIMATE

This assembly, kit or service (part # 39-300403) consists of the following items

Last updated 02/12/21

Ref No. Part No. Description Qty. Inc. Qty. on Hand Status Unit Price Extended Price
LABOR ESTIMATE
1 EW Dismantle timing gears, oil pump, etc. and establish base line end play for cam and crank.
1
-33
SO
80.00
80.00
2 EW Split cases, clean parts, remove main bearings.
2.5
-33
SO
80.00
200.00
3 EW Bead blast crank cases with walnut shells.
1
-33
SO
80.00
80.00
4 EW Remove conrods, disassemble crank and clean.
1
-33
SO
80.00
80.00
5 EW Reassemble crank and polish journals.
1.5
-33
SO
80.00
120.00
6 EW Replace old cam bushings, line ream new bushings and dry fit cam to verify proper end play and free rotation.
3
-33
SO
80.00
240.00
7 EW Dry fit crank and set proper end play.
2
-33
SO
80.00
160.00
8 EW Clean crank cases again and paint.
1.5
-33
SO
80.00
120.00
9 EW Polish conrods and bolt up to crank.
1
-33
SO
80.00
80.00
10 EW Final assembling of crank case with cam and crank.
1
-33
SO
80.00
80.00
11 EW Time cam and assemble oil pump, etc.
2
-33
SO
80.00
160.00
PARTS NORMALLY REQUIRED
12 06-4285 Conrod Bearing, Std, Set (2 Top, 2 Bottom)
1
2
-
59.95
59.95
13 06-4896 Conrod Assy., Twins, (includes bolts & nuts), Each
2
0
SO
383.85
767.70
14 06-6486 Bolt, Conrod
4
4
-
22.25
89.00
15 06-7827 Nut, 3/8 x 26, Lock, Conrod
4
4
-
3.95
15.80
16 06-1084 Camshaft, 1970 on Commando With Lube Pack
1
1
-
520.00
520.00
17 06-5428 Bush, Cam, MK3, R.H.
1
4
-
14.25
14.25
18 06-5425 Bush, Cam, 850 & MK3, L.H.
1
3
-
10.95
10.95
19 00-0572 Key, Timing Pinion and Camshaft
1
11
-
3.05
3.05
20 06-5675 Key, Timing Pinion and Camshaft
1
11
-
3.05
3.05
21 06-1086 Washer, Thrust, Camshaft, 1971 On
1
6
-
5.95
5.95
22 06-4118 Superblend Roller Bearing, Crankshaft, C3
2
0
OO
54.95
109.90
23 06-7095 Crank Bolt Set MKIII
1
2
-
93.00
93.00
24 06-4647 Slipper, Camchain, Rubber Face
1
1
-
26.40
26.40
25 06-7689 Chain, Camshaft, .375, 38 Pitches, Single
1
2
-
24.95
24.95
26 06-2447 Gasket, Oil Pump
1
7
-
0.30
0.30
27 06-1092 Gasket, Timing Cover
1
8
-
2.90
2.90
28 06-7510 Washer, Sealing, Oil Pump
1
7
-
1.30
1.30
29 04-8023 Oilseal, Crank, Right Side
1
7
-
1.80
1.80
30 06-7567 Oilseal, Main Bearing
1
2
-
1.80
1.80
31 06-5245 Circlip, Oil Seal, Main Bearing
1
4
-
0.95
0.95
32 03-4053 Oilseal, Points
1
4
-
1.75
1.75
33 06-5200/A Oilseal, Points
1
4
-
1.75
1.75
34 06-3056 Gasket, Tachdrive Housing
1
5
-
0.40
0.40
35 06-7646 Washer, Shim, Pressure Relief Valve
1
13
-
0.60
0.60
36 06-7541 Washer, Relief Valve, Nut
1
12
-
0.55
0.55
37 06-7542 Washer, Relief Valve, Union
1
8
-
0.60
0.60
NOTE Labor hours are a close estimate. Parts list is worst case and may vary depending on usability of old parts.
Total Extended Price 3158.65

STATUS Codes: OO - On Order, SO - Special Order, OP - Out of Print, D - Dropped, BO - Back Ordered, NA - Not Available, U-Used. More Status Information

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