Service Kit Bulletin

2.0 Water Pressure Switch Elimination

Date: July 7, 2021
Bulletin Name: FDM-SVC-008
Model: Oshkosh S-Series
Units Affected: 2.0 Front Discharge Mixers

Purpose:
This bulletin provides instruction for disconnecting the water manifold pressure switch. Inital vehicle design
incorporated the pressure switch, but continued testing showed the switch was causing system functionality and
performance concerns.

Notice:
• This bulletin should be read and understood in its entirety before performing this procedure.
• All procedures outlined in the bulletin must be performed by skilled service personnel. Refer to the product
service manual for descriptions of maintenance procedures.

SAFETY NOTICE

SAFETY NOTICE

Perform your company’s Lockout/Tagout
procedure. If your company does not have a
Lockout/Tagout procedure, follow OSHA
1910.147 and 1910.146 Confined Space as
appropriate.

Use appropriate Personal Protective
Equipment (PPE) as required by your
company.

Tools and Equipment Required:
Customer to supply:
• Zip ties

Parts Required:
Item

Part Number

1

A000V757

Description
WIRE HARN, JUMPER, PRESS, SW

Qty.
1

Procedure:
Lockout/Tagout
1. Place unit on a flat surface, block truck tires, and perform your company’s Lockout/Tagout procedure. If your
company does not have a Lockout/Tagout procedure, follow OSHA 1910.147 and 1910.146 Confined Space as
appropriate.
2. The vehicle’s BATTERY DISCONNECT switch is located on the left-hand side of the battery box. Use the
battery disconnect switch when performing any maintenance so the vehicle cannot accidentally be started.
a. Turn the battery disconnect switch (Figure A, Item 1) counterclockwise so the hole on the switch aligns
with the hole in the bracket (Figure A, Item 2).
b. Install the safety lockout device ring (Figure B, Item 1) through the holes on the battery disconnect switch
and the bracket.
c. Install a padlock (Figure B, Item 2) onto the safety lockout device ring, lock it, and put the key in your
pocket. If more than one person is working on the vehicle, each person must install his or her own padlock.

1

1

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be is en
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1

2

2

Figure A

Figure B

Water Pressure Switch Removal
3. Locate water manifold inside left-hand frame rail, see Figure 1.
4. Disconnect water pressure switch connector from harness connector X1299, see Figure 1.
5. Zip tie connector end of water pressure switch harness to an existing frame rail hose/harness.
6. Install harness jumper (A000V757) on harness connector X1299, see Figure 1. Zip tie harness connector
X1299 with jumper installed to an existing frame rail hose/harness.

Water Pressure Switch
Harness Connector
X1299

Water Manifold
Jumper

(A000V757)
Figure 1

7. Remove lockout/tagout.

Continuous Improvement:

The change included in this document is part of the
McNeilus Continuous Improvement Process.
McNeilus’s quality policy is providing customer satisfaction
through innovative products, dedicated service, and a
constant focus on continuous improvement.
2

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