M1450

2020-09-22

M1450: MILWAUKEE-EIGHT EQUIPPED VEHICLES - LOSS OF POWER OR HIGH
ENGINE BRAKING
Purpose for Service Bulletin

Reason for Revision

2017 - 2019 model motorcycles equipped with a
Milwaukee-Eight™ engine can experience a condition known
as sumping during extended periods at high rpm or under heavy
engine load.

Refer to Table 1.
Table 1. Document History
Date
2017-07-05
2017-07-07

Revision Description
Initial release
Updated Purpose for Service Bulletin
Updated Required Dealer Action, Dealer In2017-07-21
ventory Instructions and Extra information
2017-07-25 Added Credit Procedure and Return Parts
2017-10-18 Updated Required Dealer Action
Change Title
Updated Purpose for Service Bulletin, Re2017-10-24
quired Dealer Action and Extra Information
Added Required Dealer Action > Install
Change Title
Updated Purpose for Service Bulletin, Motorcycles Affected, Part numbers:Table 2,
2017-11-15 Dealer Inventory Instructions, Extra Information, Credit Procedure:Table 3, Credit
Procedure: Old Table 4
Added Credit Procedure:Table 4
Updated Part Numbers:Table 2, Required
Dealer Action, Required Dealer Action > If
2018 -08-21 engine damage is not observed, Extra information
Added Credit Procedure: Table 5
Updated Purpose for Service Bulletin, Motorcycles Affected, Required Dealer Action, Extra
information, Credit Procedure: Reimbursement
2019-03-28 of Oil Pump Replacement : Table 3, Old Table
4 and Table 4
Removed Credit Procedure: Reimbursement
of Oil Pump Replacement : Old Table 6
Updated Required Dealer Action
2019-05-30
Added Required Dealer Action : Figure 1
Updated Part Numbers : Table 2, Dealer Inventory Instructions, Extra informationCredit Pro2019-08-20
cedure: Reimbursement of Oil Pump Replacement : Old Table 4 and Table 4
Removed Extra information : Old Steps 1 & 2,
2020-09-22 Credit Procedure: Reimbursement of Oil Pump
Replacement : Old Table 4

Sumping is when an excessive amount of oil is suspended in
the engine crankcase and the flywheel must travel through the
oil, resulting in loss of power or a high degree of engine braking
and potential engine component damage with extended use
under these conditions.
This bulletin provides the diagnostic procedure for determining
if sumping is occurring.

Motorcycles Affected
This information applies to all 2017 - 2019 Touring, CVO, Trike,
Touring Police and 2018 - 2019 Softail model motorcycles with
a Milwaukee-Eight engine.

Markets Affected
All markets are affected.

Part Numbers
Refer to Table 2.
Table 2. Part Numbers
Current Part No.
Item Description
New Part No.
62400121, 62400143,
OIL PUMP ASSY, OIL 62400247(1)
62400178
62400124, 62400146, OIL PUMP ASSY,
(1)
62400248
62400182
WATER
OIL PUMP COVER
62400125, 62400206
62400245
ASSY
(1) When ordering oil pump assembly (Part No. 62400247 or
62400248) the oil pump cover (Part No. 62400245) comes as part of
the assembly.

Required Dealer Action
Verify that sumping symptoms are present:
1.

Confirm that the customer is experiencing loss of power
or high intensity engine braking during extended high
Revolutions Per Minute (rpm) use.

NOTE
In the interest of preserving customer safety and satisfaction, always check for outstanding recalls whenever any motorcycle is brought into your dealership for either maintenance or service.
ROUTING

INITIAL HERE

SERVICE
MANAGER

SALES MANAGER PARTS MANAGER

WARRANTY
PROCESS
MANAGER

LEAD TECHNICIAN TECHNICIAN NO. 1 TECHNICIAN NO. 2 TECHNICIAN NO. 3 RETURN THIS TO

2.

Perform an oil level hot check to verify that the engine oil
has not been over-filled or that oil level is low with no
apparent signs of leakage. See the service manual.
a.

Operate the engine at idle for 2 min.

b.

Stop the engine.

c.

Check engine oil level immediately.

d.

Remove excess oil or add oil, if necessary.

3.
NOTE
Sumping is more detectable at warmer oil temperatures.

11. The condition is likely caused by sumping.
a.

Verify that oil lines to cylinder heads are not plugged
or restricted.

b.

Verify the crankcase scavenge O-ring is in place and
undamaged.

c.

Verify there is no obstruction or loose part in the oil
pump scavenge passage.

d.

Verify the oil pump bypass valve can be moved and
is not stuck closed or sticking partially down the bore.

e.

Remove breather bolts and breather lines to verify
they are free and clear without blockages. This
includes both the hoses inside the air cleaner as well
as the breather bolts.

Take the vehicle for a test ride and operate the engine to
normal operating temperature (Bulk Oil Tank Temperature).
Temperature: 93–121 °C (200–250 °F)
4.

Connect oil pressure gauge. See the service manual.

5.

Record oil pressure at:

6.

7.

a.

850 rpm (Idle): Ideal pressure is 103.4–172.4 kPa
(15–25 psi).

b.

3,000 rpm: Ideal pressure is 275.8–344.7 kPa
(40–50 psi).

NOTE
Use caution with the addition of thread sealant on
breather bolts. Excess sealant added during service
or P&A install can lead to a plugged passage.
f.

Verify breather umbrella valve is sealing properly.
Should allow air to exit the engine but not allow air
back into the engine. if it is not sealing, replace the
breather assembly.

g.

Verify cylinder and piston integrity (scuffing, scoring,
oil rings present) and check that ring end gaps are
not aligned.

h.

Verify operation of the flywheel and connecting rods.
Connecting rod bearings that require more than light
force to separate may require additional service.
Refer to TA0023.

i.

A reduction in piston jet assembly screw torque is
expected after operation due to gasket compression.
Unless piston jet assembly is visibly loose, the piston
jet assembly gasket is mis-installed or the gasket or
a screw is missing, the piston jet assembly joint will
not cause sumping. Tighten piston jet assembly.

Oil pressure is:
a.

Within ideal pressures: Go to Step 7

b.

Low oil pressure: Check for a stuck pressure relief
valve or a restriction at oil pump pick up.

c.

High oil pressure: Check for a pinched oil line or a
blockage after oil pump.

Place vehicle in an upright position.
a.

With the vehicle at operating temperature, allow
vehicle to idle in an upright position for 45–60 s.

Torque: 3.1–3.7 N·m (27–33 in-lbs)
j.

8.

9.

Stop the engine. Remove the Crankshaft Position (CKP)
sensor within one minute.
a.

Inspect the CKP sensor for signs of plastic blistering
or sensor head doming by comparing to a known
good part.

b.

Replace as needed.

See Figure 1. Verify that the protrusion (4) of the
dowel pin (3) on the cam support plate (1) is equal
to or less than 3.3 mm (0.130 in).

Measure amount of oil drained from the sensor opening.
a.

Less than 177.4 ml (6 fl oz): Go to Step 10.

b.

Greater than 177.4 ml (6 fl oz): Go to Step 11.

10. The condition is not caused by sumping.
a.

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Explore other causes (fuel, timing, intake and so on).

M1450

Table 3. Kits Registered to SWR

1357672

ITEM
Claim Type
Problem Part Number

3

1

Quantity
Primary Labor Code
Time
Customer Concern Code
Condition Code
Replacement part number

2

3
4

Table 4. OEM Credit Table - Diagnostics, Replace Oil Pump,
Reassemble
ITEM
Claim Type
Problem Part Number

1.
Cam support plate
2.
Cam support plate mating surface
3.
Dowel pin
4.
Protrusion measurement
Figure 1. Cam Support Plate Dowel Pin Measurement
If engine damage is observed: Contact regional Technical
Service.
If engine damage is not observed: Install new oil pump and
oil pump cover ( Refer to Table 2. ) then assemble engine and
file the appropriate warranty claim. Refer to the applicable table,
Table 3, Table 4 or Table 5.

Install
1.

Install cam support plate. See the service manual.

Dealer Inventory Instructions
Use oil pump (Part No. 62400247 or 62400248) for engines
that are exhibiting sumping.

Extra information
1.

When performing an oil pump repair on an Original
Equipment (OE) 2017 - 2019 Milwaukee-Eight equipped
motorcycle, a new pump assembly is recommended. Order
the new pump through the regular part ordering process.

DATA
PNA / Standard claim
Screamin' Eagle Stage III or IV
Kit registered to VIN
Leave Blank
8865
12.8 h
3102
9106
New oil pump and necessary
miscellaneous parts. Refer to
Table 2.

Quantity
(1)

Labor Code
Time
Customer Concern Code
Condition Code
Replacement part number

DATA
MC / Standard Claim
Part number that caused failure.
Leave Blank
3348
12.8 h
3102
9106
62400247 or 62400248 and
necessary miscellaneous
parts. Refer to Table 2.

(1) Download may be required.

After receiving an authorization from Technical Services to
replace the Shortblock. Refer to Table 5.
Table 5. Shortblock Replacement Credit Table
ITEM
Claim Type
Problem Part Number
Quantity
Primary Labor Code
Event Detail Labor Code
Time
Customer Concern Code
Condition Code
Additional Parts

DATA
PNA / Standard Claim
Stage 3 or Stage 4 kit registered to the Vehicle Identification Number (VIN)
1
Leave Blank
8888
11.2 h
3102
9106
New oil pump, shortblock,
gaskets and fluids

2.

For OE applications exhibiting this condition where an oil
pump has been installed. Refer to Table 4.

Bulletin number M1450 must be entered into the comments
section of the claim.

3.

New oil pumps installed for OE installations are reimbursed
at cost. Refer to Table 4.

Return Parts

Credit Procedure: Reimbursement of Oil
Pump Replacement

Hold all claimed parts for 60 d from date of credit issued for
possible field inspection and/or request to return to factory.
After 60 d, destroy and discard the parts.

Reference this bulletin in the Event Notes/Comments of claim.

M1450

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