Bulletin Number:

SB-20-338 (Revision B)

Release Date:

August 27, 2020

Distribution:

Heil Dealers, Heil Technical Services, Heil Sales Team, Heil Customer
Care

Subject:

Half/Pack® (Featuring Odyssey® Controls): Pump-to-Valve 4-Wire Spiral
Hydraulic Hoses Standardization and Hydraulic Hose Clamps Inspection

NOTE: READ THIS BULLETIN IN ITS ENTIRETY BEFORE BEGINNING ANY REPAIR WORK.
Starting August 1, 2020, to ensure the highest hydraulic hose reliability, pump-to-filter and filter-to-valve 4wire spiral hydraulic hoses have become standard on all Half/Pack® (featuring Odyssey® Controls) units.
These two (2) specific 2-wire braided hydraulic hoses (Parker 387ST-16) that will be replaced with 4-wire
spiral hoses (Parker 722ST-16 or equivalent) on these units are:
(1) Pump to high pressure filter (hose part number varies with chassis configuration)
(2) High pressure filter to main body control valve (hose part number varies with chassis configuration)
To address units in the field, Heil Environmental agrees to provide warranty replacement of these two (2)
OEM installed hoses on the units listed in the Products Affected section when Hose Specification/Installation
Requirements from Section 3 of this Service Bulletin are followed.
Additionally, this Service Bulletin outlines the procedure to inspect all hose support clamps for proper
installation and perform Hydraulic System tasks as outlined in the Heil Service Manual Body Preventive
Maintenance Chart.

1.

PLANNING INFORMATION
A. Products Affected
A full list of affected unit serial numbers will be sent out with this Service Bulletin.

B.

Compliance
Each Dealer must perform these tasks as outlined in this Service Bulletin for each unit identified
above in the Products Affected section no later than October 31, 2020. The tasks outlined in this
Service Bulletin must be performed by a qualified technician.

C. Manpower
The labor effort required to accomplish the tasks in this Service Bulletin is shown in Table 1.
TASK

Table 1. Manpower

Replace pump-to-filter and filter-to-valve hydraulic hoses as described in
this Service Bulletin

© Copyright 2020 The Heil Co. All Rights Reserved

MAN HOURS REQUIRED

1

Page 1 of 7

D. Tools, Materials and Parts Needed
The tools and parts necessary to perform the rework are outlined in Table 2 and Table 3.
ITEM
Personal Protective Equipment
Wrench Set
Torque Wrench
Container

Table 2. Tools and Materials
PART NUMBER
Commercially available
Commercially available
Commercially available
Commercially available

Table 3. Parts

PART NUMBER

DESCRIPTION

MP6-FKFK-020,
MP6-FKFK-021,
MP6-FKFK-022,
through
MP6-FKFK-100

Hydraulic Hose, Pump-to-Filter,
4000 PSI Minimum Working
Pressure, 4-Wire Spiral, 1”

MP6-FKFK-020,
MP6-FKFK-021,
MP6-FKFK-022,
through
MP6-FKFK-100

Hydraulic Hose, Filter-to-Valve,
4000 PSI Minimum Working
Pressure, 4-Wire Spiral, 1”

N/A

Crimp Fitting, -16 (1”), Female 37
Degree, JIC, Straight Swivel
Clamp, 4-Wire Spiral Hydraulic
Hose, 1”

036-1982-50380

APPLICATION
Safety protection as required by employer
To disconnect/connect hydraulic fittings
To properly tighten hydraulic fittings
To capture hydraulic fluid

QTY PER
UNIT
1

SPECIAL INSTRUCTIONS
Hose part number varies with chassis
configuration. Heil part number ends in
hose length in inches.
Use Parker 722ST-16 or equivalent. See
Table 4.

1

Hose part number varies with chassis
configuration. Heil part number ends in
hose length in inches.
Use Parker 722ST-16 or equivalent. See
Table 4.

4

Hose end crimp fittings are specific to
the brand and model of hose.

3

Table 4. OEM Hose Brand and Model Equivalents
BRAND
Parker
Gates
Eaton / Aeroquip
Eaton / Weatherhead
Eaton / Weatherhead
Semperit
Kurt
Pirtek

© Copyright 2020 The Heil Co. All Rights Reserved

MODEL
722ST
EFG4K
GH493
H430
H471
FLEXLINE 4000
E-Z BEND 4SK
100CS3

Page 2 of 7

2.

PREPARING THE UNIT AND WORK AREA

Prior to performing Lock-Out/Tag-Out, make sure to LOWER the arms and forks FULLY DOWN to
the ground or RAISE the arms FULLY UP against the arm stops.
Be certain that all hydraulic pressure has been fully relieved before beginning any hydraulic
rework.
To relieve the hydraulic pressure in the system:
(1) When there are in-cab controls, turn the ignition switch to ON then:
(a) Move the switches of the hydraulic controls. This relieves the pressure in the cylinders.
(b) Turn the ignition switch to OFF.
(c) When there are no in-cab controls, move the outside control levers to relieve the pressure
in the cylinders.
Make sure that the unit is in Lock-Out/Tag-Out mode before performing re-work. Refer to and follow
your company’s Lock-Out/Tag-Out policies and procedures. At a minimum, refer to and follow the LockOut/Tag-Out procedure found in your Heil Service Manual. Always wear appropriate Personal Protective
Equipment as required by your employer (but to always include at a minimum, safety glasses and OSHA
approved hard-toed boots) when repairing a unit or performing scheduled maintenance on a unit. Clear
the work area around the unit of all unnecessary people and equipment.

3.

CORRECTIVE ACTIONS

With the unit prepared as described in Section 2 of this Service Bulletin, in Lock-Out/Tag-Out mode,
carefully follow the steps below.

A.

Replace Two (2) Affected Hydraulic Hoses
Refer to Table 3 for Heil part numbers and Table 4 for non-Parker hose equivalents.
(1) Identify the pump-to-filter and filter-to-valve hydraulic hoses to be replaced.
(2) Detach the hydraulic fittings and drain remaining oil from the old hose into the container.
(3) Procure new 1” diameter high-pressure hoses (Parker 722ST-16 or equivalent) with new
fittings that meet the requirements below. Some unit configurations may require different length
hoses than the hose that is being replaced in order to achieve the following installation
requirements, however the hose length of the hose being replaced can be used as a baseline
for determining the replacement hose length.
Hose Specification/Installation Requirements:
(a) The required minimum Bend Radius specification of the replacement hose material is 6” or
less.
(b) Length of the replacement hose must allow the installed hose Bend Radius to be 6” or
more.
(c) Installation of the replacement hose must allow for a straight section of hose adjacent to
the crimp fitting to be a minimum of twice the Outside Diameter (OD) of the hose. For a
Heil supplied hose for this application this is a minimum of 2.75”.

© Copyright 2020 The Heil Co. All Rights Reserved

Page 3 of 7

(d) The hose length must be made so that the hose assembly has enough length to allow for
changes in length to occur when the hose is pressured and for the system components to
operate without violating the installation requirements.
(e) The replacement hose must have an Abrasion Resistant Outer Layer. All replacement
hoses are to be of the 4-wire spiral construction and have a minimum of 4000 PSI
Working Pressure rating.
(4) Install the new hydraulic hoses. Use a backup wrench to ensure that the hose does not twist
while tightening the fittings. Torque fittings to 130 FT-LBS.

B.

Test for Hydraulic Fluid Leaks
(1) Take the unit out of Lock-Out/Tag-Out Mode.
(2) Operate all unit functions. Then check for leaks.
(3) If there are leaks, tighten the hydraulic fittings that are leaking and then check again for leaks.
(4)

When there are no leaks, check hydraulic oil level and add oil if needed.

C. Inspect all Hydraulic Hose Support Clamps
Hydraulic tube clamps should never be used on hydraulic hoses. Over time, these types of clamps
will rub through the hose covering and potentially cause hose failure.
(1) Inspect all hose clamps. There should be no daylight coming through between the hose and
hose clamp. See Figure 2 for an example of incorrect use of a tube clamp on a hose.
(2) Replace any tube clamps used for hoses with appropriately sized hose clamps. The hose
clamps must be tight and secure around the hoses. See Figure 1 and Table 5.

Figure 1. CORRECT Use of Hose Clamps for
Hoses

Figure 2. INCORRECT Use of Tube Clamps for
Hoses

Figure 3. Typical Hose Clamp

Figure 4. Typical Tube Clamp

© Copyright 2020 The Heil Co. All Rights Reserved

Page 4 of 7

Table 5. Hose Support Clamps Part Numbers

SINGLE HOSE SUPPORT CLAMPS FOR PARKER ABRASION RESISTANT HOSE
WITHOUT FIBER GUARD
HOSE
WORKING
PRESSURE

HOSE
CONSTRUCTION

PARKER
HOSE
SERIES

PARKER
HOSE
SIZE

3000 PSI
3000 PSI
3000 PSI
3000 PSI
3000 PSI
3000 PSI
3000 PSI

2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID

387ST
387ST
387ST
387ST
387ST
387ST
387ST

04
06
08
10
12
16
20

4000 PSI
4000 PSI
4000 PSI
4000 PSI
4000 PSI
4000 PSI
4000 PSI

2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
2-WIRE BRAID
4-WIRE SPIRAL
4-WIRE SPIRAL

487ST
487ST
487ST
487ST
487ST
487ST
487ST

4000 PSI
4000 PSI
4000 PSI
4000 PSI
4000 PSI

4-WIRE SPIRAL
4-WIRE SPIRAL
4-WIRE SPIRAL
4-WIRE SPIRAL
4-WIRE SPIRAL

4000 PSI
4000 PSI
4000 PSI
4000 PSI
4000 PSI

4-WIRE SPIRAL,
LOW TEMP
4-WIRE SPIRAL,
LOW TEMP
4-WIRE SPIRAL,
LOW TEMP
4-WIRE SPIRAL,
LOW TEMP
4-WIRE SPIRAL,
LOW TEMP

HOSE
OUTSIDE
DIAMETER
INCH

MM

HEIL PART
CLAMP NUMBER

CLAMP
BORE
(MM)

0.53
0.69
0.81
0.94
1.09
1.39
1.82

13.4
17.4
20.7
23.9
27.8
35.4
46.3

036-1982-20127
036-1982-20172
036-1982-30200
036-1982-30230
036-1982-40269
036-1982-50350
036-1982-60460

12.7
17.2
20.0
23.0
26.9
35.0
46.0

04
06
08
10
12
16
20

0.52
0.68
0.80
0.94
1.09
1.49
1.82

13.1
17.2
20.4
23.9
27.8
37.8
46.3

036-1982-20127
036-1982-20172
036-1982-30200
036-1982-30230
036-1982-40269
036-1982-50380
036-1982-60460

12.7
17.2
20.0
23.0
26.9
38.0
46.0

722ST
722ST
722ST
722ST
722ST

06
08
10
12
16

0.78
0.89
1.04
1.21
1.49

19.9
22.7
26.4
30.7
37.8

036-1982-30190
036-1982-30220
036-1982-30254
036-1982-40300
036-1982-50380

19.0
22.0
25.4
30.0
38.0

722LT

06

0.78

19.9

036-1982-30190

19.0

722LT

08

0.89

22.7

036-1982-30220

22.0

722LT

10

1.04

26.4

036-1982-30254

25.4

722LT

12

1.21

30.7

036-1982-40300

30.0

722LT

16

1.49

37.8

036-1982-50380

38.0

© Copyright 2020 The Heil Co. All Rights Reserved

Page 5 of 7

D. Body Hydraulics Preventive Maintenance
Following the Body Preventive Maintenance schedule found in Heil Service Manuals, perform the
Hydraulic System tasks below.
(1) Daily (8 Hours)
(a) Check oil level – add if necessary.
(2) Weekly (40 Hours)
(a) Check cylinders, pump, hoses, tubes, fittings, and adapters for leaks.
(b) Check hoses for cracks, crushes, and cover blisters. Repair or replace if necessary with
genuine Heil parts.
(c) Any replacement hose should be the same size and pressure rating as listed on the
original OEM hose.
(d) Check control valve seals for leaks. Repair or replace if necessary.
(3) Every Six Months (1000 Hours)
(a) Replace filters after first 30 days of operation, then every 6 months or 1000 hours of
operation OR when filter bypass light is ON.
(b) Replace tank breather filter every time you replace filter element.
(4) Yearly (2000 Hours)
(a) Drain, flush, and refill.
(b) Change filter elements.
(c) Change oil when oil sample shows to change oil.
To obtain reimbursement from Heil for re-work as a result of implementing this Service Bulletin, submit one completed
Request For Credit (RFC) for each unit re-worked. Heil Dealers and Service Centers must file claims electronically using
Heil’s online warranty system. Heil Environmental agrees to provide warranty replacement of these two (2) specified
hoses that meet the replacement criteria shown in the first section of this Service Bulletin. Labor will be reimbursed one
(1) hour per re-worked affected unit listed in this Service Bulletin. Parts will be reimbursed $35 for pump-to-filter hose, $58
for filter-to-valve hose, and $3 per hose clamp, for a total maximum parts reimbursement of $102 per re-worked affected
unit listed in this Service Bulletin. There will be no labor reimbursement for inspections. Heil reserves the right to
request the return of any replaced hoses for our inspection to review any reimbursement claim. All re-work must
be completed by October 31, 2020.

© Copyright 2020 The Heil Co. All Rights Reserved

Page 6 of 7

If you have any questions regarding the information detailed in this Bulletin, please contact Heil Technical
Service at 866.310.4345.

Heil Environmental Service Bulletin procedures are intended for use by professional technicians, NOT a “do-it-yourselfer.” They are
written to inform experienced technicians of conditions that may occur on some units, or to provide information that could assist in the
proper servicing of a unit. Properly trained technicians have access to and are familiar with the applicable Heil Operation Manual
and Heil Parts and Service Manuals and have the equipment, tools, safety training, and know-how to do a job properly and safely. If a
condition is described, DO NOT assume that the Bulletin instructions apply to your unit, or that your unit will have that condition. See
your Heil Dealer to determine whether your unit may benefit from the information in this Service Bulletin.
This entire bulletin (and any attachments) is confidential and only for the intended recipient(s). Use or distribution by any unintended
recipient is prohibited. If you have received this bulletin in error, delete this entire communication, and notify the sender you have done
so.
© Copyright 2020 The Heil Co. All Rights Reserved

Page 7 of 7