BAKER DRIVETRAIN 731-67 30-Tooth Compensator Sprocket Kit Instruction Manual
- June 12, 2024
- BAKER Drivetrain
Table of Contents
PV1-23206
30-TOOTH COMPENSATOR SPROCKET KIT
PN 731-67 | 731-M8 | 732-67 | 732-M8 Compensator Sprocket Kit
FEATURES
The BAKER 30-Tooth Compensator Sprocket Kit is the only torque-increasing comp
sprocket on the market! This is the end-all comp sprocket that yields a 13%
increase in the primary drive ratio. This means that if you currently have a
stage 1 engine, this compensator sprocket kit will advance you to the
performance of a stage 2 engine or more.
The BAKER 30-Tooth Compensator Kit also features improved function, quieter
operation, and extended durability over the stock Factory configuration. These
improvements were achieved by increased cam lobe geometry width and ramp
angles (figure 1) with adding a circular oil skirt (figure 2) that channels
primary lubricant into the cam lobe region.
FITMENT
- 2006 — 2017 Dyna Models & 2007-2017 Softail* Models (PN 731-67)
- 2007 — 2016 Touring Models (PN 732-67)
- 2017 — Later Touring Milwaukee 8 Models (PN 732-M8)
- 2018 — Later Softair Milwaukee 8 Models (PN 731-M8)
o Compensating Sprocket currently does not fit Softails with wide rear tires 1E:
240 rear tires found on Fat Boye® Breakout® & CVO Models. etc.
PARTS, SPECIAL TOOLS, and REFERENCE MATERIALS REQUIRED
To complete the installation of the BAKER Compensator Kit the following is required:
- A new primary cover gasket.
- T-70 Torx socket, removal and installation of sprocket assembly.
- 9/16-12 bottoming tap or thread chaser to clean the sprocket shaft female threads.
- Early Factory compensators utilized a rotor with an integral compensator spring cup. Bikes equipped with this early style rotor must be retrofitted with a PN 30041-08A late style rotor.
- 2006 Dyna must also retrofit the stator with PN 30017-07.
- Primary drive lubricant; see details on Page 5.
- Primary Drive locking tool HD-48219 (Touring models) I-ID-47977 (Softail/Dyna)
- These instructions make references to the Factory service manual. A service manual for your year and model motorcycle is required.
HIGHLY RECOMMENDED ADDITIONAL PART
With the primary drive disassembled to install the new compensator, BAKER
highly recommends that the automatic chain tensioner be replaced with a
177-67A-A Armored Attitude Adjuster (figure 3). Extensive testing and
durability miles have proven that the 177-67A-A Adjuster puts less bending
moment loading on the motor sprocket shaft and the transmission mainshaft
thereby extending the life of the drivetrain components.
ITEM | QTY | P/N | DESCRIPTION |
---|---|---|---|
1 | 1 | 10500031 | 9/16-12, Bolt |
2 | 1 | 619-67 | Retainer, Comp Sprocket |
3 | 1 | BD-40100064 | Thrust Washer |
4 | 1 | 621-30 | 30 Tooth Comp Sprocket |
5 | 1 | 722-67 | Motor Extension Shaft |
6 | 1 | 9262K682 | O-Ring, 2mm x 31mm Buna |
7 | 1 | 623-67-4A | Cam Slider |
8 | 4 | 620-67 | Belleville Spring |
9 | 1 | 9452K189 | O-ring, Buna-N, #239 |
10 | 1 | 624-67-4 | Retainer, Spring |
11 | *1 | 617-67 | Spacer, Spring Pack |
12 | 1 | 3088A388 | Shim, 1-1/4 x 1-3/4 x .020” |
13 | 1 | 3088A328 | Shim, 1-1/4 x 1-3/4 x .010” |
14 | 1 | 3088A438 | Shim, 1-1/4 x 1-3/4 x .031″ |
15 | 1 | 428-2-84 or 428-2-90 | Primary chain, Touring-84P or Softail-90P |
REMOVAL
Remove the outer primary and existing compensator sprocketper the Factory
service manual but add the following steps to the job:
- We highly recommend that the stock 9/16-12 compensator bolt be heated with MAP gas, prior to removal, to soften the red Loctite® . Without the use of heat, the hardened red Loctite® may break up into pieces and act like a very coarse abrasive and destroy the bolt threads as shown in figure 5.
- After the stock compensator bolt is removed, clean out the 9/16-12 female sprocket shaft threads with a 9/16-12 bottoming tap or thread chaser.
- Thoroughly purge the 9/16-12 threads with lacquer thinner or brake clean and blow all debris out of the blind hole with shop air.
REMEMBER SAFETY FIRST; WEAR EYE PROTECTION WHEN USING SHOP AIR
INSTALLATION
The 731-67, 732-67, 731-M8 & 732-M8 installs and
replaces the stock factory compensator components with no modifications
required.
-
Apply some primary lubricant to the compensator sprocket bore, cam lobes, cam slider cam lobes, motor extension shaft splines (inner/outer) and pre-installed motor extension shaft O-Ring prior to installation, figure 6.
-
The compensator sprocket installs in the same sequence as shipped and as shown in figure 4 (detailed view).
• For non-Milwaukee-Eight® models, install the spacer (617-67) onto the crankshaft.
• Milwaukee-Eight® models will not use a spacer as the spring cup will go against the stator rotor. -
Install the cam slider (623-67-4) onto the motor extension shaft (722-67) and slide the spring cup assembly onto the back of the cam slider, figure 7. Make sure the lip on the spring cup faces toward the engine.
-
Align the crankshaft splines and extensions shaft splines and slide the assembly onto the motor crankshaft, figure 8.
-
Install the compensating sprocket (621-30), retainer (61967) with thrust washer (BD-40100064) and bolt (10500031).
CHAIN ALIGNMENT:
-
Install just the clutch and BAKER Compensator Sprocket; NO CHAIN.
Install the clutch nut and bolt (10500031); snug at this time. -
Use some spacers to replicate the thickness of the outer primary and install the long ¼-20 threaded bolt into the primary as shown in figure 9 and torque down per your factory service manual.
-
Place a straightedge across the end of the sprockets. With a dial caliper, measure the distance from the straightedge to the gasket surface of the inner primary. When taking the measurement, measure on the front area of the primary for the compensator and rear area for the clutch. Record this measurement. Figure 10 & 11.
-
Compare the two measurements taken.
The two measurements taken (the difference) will be the spacer thickness needed (if required). Motor sprocket shims are supplied (3088A438, 3088A388, and 3088A328) to accommodate your needs.
If shims are required, install the shim on the crankshaft up against the stator rotor assembly before the compensator sprocket kit is installed.
When the two measurements are .030” or less, proceed to final assembly. -
Install the primary chain, clean and apply some red Loctite® to the compensator bolt (10500031) and clutch nut threads. Using a primary locking tool between the sprockets, torque the clutch nut to factory specifications following your service manual. Torque the compensator bolt (10500031) to 100ft-lbs, then back off (loosen) a half turn then re- torque to 175ft-lbs for final torque. A properly installed BAKER Compensator Sprocket looks like that shown in Figure 12.
PRIMARY CHAINCASE LUBRICANT
Fill the primary per the Factory Service Manual.
BAKER recommends that Spectro Heavy Duty
Primary Chaincase Oil or HD Formula+ Transmission and Chaincase Lubricant
(99851-05) be used.
TERMS & CONDITIONS
ORDERS
Orders can be pre-paid using VISA, MasterCard, American Express, and Discover
or via wire transfer ($30 wire transfer fee applies).
All orders not pre-paid will be sent C.O.D. certified check or money order
only unless pre-approved for company check acceptance.
Any orders from outside the USA must be pre-paid in US funds via wire transfer
($30 transfer fee applies).
Prices shown are F.O.B. Haslett, MI. BAKER™ ships via UPS Ground or USPS
Parcel Post for all orders. UPS air shipment or USPS Priority/ Express
services are available upon request. Customer is responsible for all shipping
charges unless otherwise arranged at the time of sale.
CUSTOMER SUPPORT
For any installation or service questions, please contact our BAKER technical
department: 1-517-339-3835.
LIMITED WARRANTY
NOTE: Warranty registration must be submitted within 45 days of purchase
for your warranty to be valid.
BAKER™ transmission assemblies and transmission builder ‘s kits, are
guaranteed to the original purchaser to be free of manufacturing defects in
materials and workmanship for a period of 5 years from the date of purchase or
up to 50,000 miles, whichever occurs first. All other BAKER products are
guaranteed to the original purchaser to be free of manufacturing defects in
materials and workmanship for a period of 2 years from the date of purchase or
up to 24,000 miles, whichever occurs first, except for the following; Warranty
does not cover clutch plate wear, throw out bearing failures or mainshaft
breakage due to improper clutch nut installation.
Electrical components carry a 30-day warranty; cosmetic finishes (chrome
plating, hard anodizing, powder coating) are covered for 60 days. Certain
promotional products may carry a shorter warranty as specified at the time of
purchase. If the product is found by BAKER to be defective, such products
will, at the option of BAKER, be replaced or repaired at cost to BAKER.
In the event warranty service is required, the original purchaser must call or
write BAKER immediately with a description of the problem. If it is deemed
necessary for BAKER to make an evaluation to determine whether the
transmission assembly or transmission kit or accessory is defective, the
entire transmission assembly, whether originally purchased as an assembly or
kit, must be properly packaged and returned prepaid to BAKER with a copy of
the original purchase invoice. If after evaluation by BAKER a defect in
materials and/or workmanship is found, BAKER will, at their option, repair or
replace the defective part of the assembly.
RETURNS AND EXCHANGES
Any merchandise returned for any reason (exchange, credit or modification)
must be accompanied by a Return Goods Authorization (RGA) number or it will be
refused. Call BAKER to obtain this number prior to returning goods for any
reason. There is a 15% restocking fee for all returned items.
BAKER is not liable for any shipping.
ADDITIONAL WARRANTY PROVISIONS
NOTE: Limited warranty does not cover labor or other costs or expenses
incidental to the repair and or replacement of BAKER products.
This warranty does not apply if one or more of the following situations is
judged by BAKER to be relevant: BAKER OEM transmissions ; (these are subject
to the OEM manufacturers warranty only), Improper installation , accident,
modification (including but not limited to use of unauthorized parts,
transmission oils or lubricants), racing, high performance application,
mishandling, misapplication, neglect (including but not limited to improper
maintenance), or improper repair.
BAKER shall not be liable for any consequential or incidental damages arising
out of or in connection with a BAKER transmission assembly, transmission kit,
component or part. Consequential damages shall include without limitation,
loss of use, income or profit, or losses sustained as the result of injury
(including death) to any person or loss of or damage to property.
BAKER transmissions, transmission kits and accessories are designed
exclusively for use in American V-Twin motorcycles. BAKER shall have no
warranty or liability obligation if BAKER parts are used in any other
application.
If it is determined that a BAKER product has been disassembled during the
warranty period for any reason, this limited warranty will no longer apply
unless you were instructed to do so by a BAKER Drivetrain technician for
diagnostic purposes.
DISCLAIMER
The words Harley and H-D are registered trademarks and are for reference only.
Use of H-D model designations and part numbers are for reference only. BAKER
Drivetrain has no association with, and makes no claim against, these words,
trademarks, or companies.
It is the sole responsibility of the user to determine the suitability of this
product for his or her use, and the user shall assume all legal, personal
injury risk and liability and all other as well as all other obligations,
duties and risks associated therewith.
TERMS & CONDITIONS