SM6958
March 2010
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Aerospace Group
Conveyance Systems Division
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UNDERWIN
® FBO OPERATIONS
Carter Brand
Ground Fueling Equipment MODELS 6404
Carter now offers an under
airfield, FBO, use with a ne
for strainer checking, with
break. The underwing nozz
utilizes the Carter Unisex C
Maintenance & Repair Manual
Bottom Loading & Recirculation Adapters
Models 6958, 61272, 61409, 61528, 64040 & 61529
6404
Underwing Nozzle
Unisex Coupling
and Dust Caps for
671 W. 17th St., Costa
BACK
SM6958 March 2010
Table of Contents
Page
1.0 Introduction ................................................................................................. 3
2.0 Equipment Description ................................................................................ 3
3.0 Table of Options .......................................................................................... 3
4.0 Disassembly ................................................................................................ 4
5.0 Inspection .................................................................................................... 4
6.0 Reassembly................................................................................................. 4
7.0 Test ............................................................................................................. 5
8.0 Illustrated Parts List ..................................................................................... 5
Figure 1 ....................................................................................................... 7
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SM6958 March 2010
Maintenance, Overhaul & Test Instructions
Carter® brand Models 6958, 61272, 61409, 61528, 64040 & 61529
Bottom Loading & Recirculation Adapters
1.0 INTRODUCTION
This manual furnishes detailed instructions recirculation adapters. These units all utilize
covering the maintenance and overhaul of the MS24484 type refueling modular
Carter Models 6958, 61272, 61409, 61528, adapter.
64040 & 61529 bottom loading and
2.0 EQUIPMENT DESCRIPTION
These Carter models are all of similar design in temperatures up to 350°F. The seal on the
that they all utilize the 2-½” MS24484 type MS24484-2 is suitable for temperatures up
refueling modular adapter. This type of adapter 160°F.
is only suited for bottom loading and
recirculation or other relatively low pressure The bayonet flange to which the nozzle
type applications. For hydrant system connects on the MS24484-5, has a greater
applications use Model 60195 or Model 60373 tensile strength requirement required by the
for 2-½” installations. Use Model 60505 or 350°F requirement. Again, the MS24484-2
Model 61526 adapters for 4” API type was designed for service at temperatures up
applications. These adapters consist of a cast to 160°F.
aluminum housing in which is mounted either The MS24484-5 is only manufactured by
the commercial version, MS24484-2, or the specifically qualified suppliers, among which
current QPL version, MS24484-5, refueling is Argo-Tech Corporation, Airframe Division.
modular adapter. Both of these MS24484 units The MS24484-2, a previously listed qualified
are dimensionally identical. The only product is made by Argo-Tech’s Carter
differences lie in two areas, both related to Ground Fueling.
high temperature applications normally seen in
fighter aircraft applications: All of the models discussed herein, except
for the basic module, 61529, are similar,
Poppet seal on the MS24484-5 is of a varying mainly in the outlet mounting
high temperature elastomer for use in configuration.
3.0 TABLE OF OPTIONS
Each of the basic units may be obtained in various configurations by adding one or more of the options
listed in the table below.
Option
Letter Description Comments
A Adds pressure dust cap (61531) In lieu of option B on all models.
B Adds plastic dust cap (41607) In lieu of option A on all models.
C Adds commercial MS24484-2 In lieu of option D on all models except 61529. (Either C or
adapter D must be specified to obtain a complete unit).
D Adds military MS24484-5 adapter In lieu of option C on all models except 61529. (Either C or
D must be specified to obtain a complete unit).
G Adds 2-½" - 8 NPT female outlet In lieu of option H on 6958 only. (Either G or H must be
specified to obtain a complete unit).
H Adds 2-½" - BSPP female outlet In lieu of option G on 6958 only (Either G or H must be
specified to obtain a complete unit).
4.0 DISASSEMBLY
Refer to Figure 1 for an exploded view of not remove the two pipe Plugs (5) from the
the unit. Housing (3) unless replacement is required.
4.1 Remove six Screws (1). Pull Adapter 4.2 Spare parts for the Cap (11 or 11A) are not
Module (2 or 2A) from Housing (3) and available. If it is faulty replace as a complete
remove and discard O-ring (4). Remove Cap unit.
(11 or 11A) from Adapter Module (2 or 2A).
If present (available only on some units), do
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SM6958 March 2010
4.3 Noting the following warning, carefully
WARNING
remove the six Screws (6) from the Adapter
Module (2 or 2A). The Spider (7 or 7A) is spring loaded and
care should be exercised in removing the
attaching Screws (6).
5.0 INSPECTION
5.1 Special Tools - Use Adapter Wear Gauge, 5.2 Check the seal on Cap (11A) for
61657-2 to check the Flange (9 or 9A) of deterioration, cuts or nicks. Replace the Cap
Adapter Module (2 or 2A) for suitability for (11A) if such aberrations are apparent.
continued use. Refer to manual SM61657
for instructions on its use. This gauge will 5.3 Check Cap (11) for aging cracks or other
indicate whether the slots and lugs of the damage. Replace as needed.
Flange (9 or 9A) of Adapter Module (2 or 5.4 Inspect Poppet (8 or 8A) for damage to the
2A) are worn beyond safe use. seal. The seal is bonded into the metal
poppet and is not removable. Replace
Poppet (8 or 8A) as needed.
6.0 REASSEMBLY
6.1 Reassembly is accomplished in essentially 6.4 Place the O-ring (4) in the groove in Adapter
the reverse order of disassembly noting the Module (2 or 2A) before installing in the
following: Housing (3). Torque Screws (1) to 20 ± 2 in-
lbs (.23 m-kg).
6.2 Light lubrication of all O-rings and seals,
using petroleum jelly is recommended to 6.5 Reattach Cap (11 or 11A) to tab on Adapter
facilitate installation. Module (2 or 2A) if utilized.
6.3 Reassemble Adapter Module (2 or 2A).
7.0 TEST
7.1 The following test procedures will be small petcock or hand valve. With the nozzle
accomplished after overhaul: and petcock open, slowly increase the
pressure into the adapter outlet to fully bleed
7.2 Test conditions the air from the test unit. Close the petcock
7.2.1 Test media shall be Stoddard Solvent and increase the test pressure to 120 psi.
(Fe d e ra l S p e c i f i c a t i o n P -D -6 8 0 ), Check for external leakage from the joint
J P -4 p e r MIL-J-5624D at 75° + 15°F, Jet between the nozzle and adapter and from the
A or equivalent. adapter housing and joints.
7.3 Functional Test 7.3.2 Bleed the pressure from the test unit and
remove the nozzle.
7.3.1 Attach adapter to a 120 psi fluid pressure
source through the outlet (flanged or 7.3.3 Slowly increase the system pressure again
threaded end). Attach a Carter brand Model to 120 psi and check for leakage from the
60427 or 61428 type nozzle to the inlet Adapter Module (2 or 2A) Poppet (10 or
Adapter Module (2 or 2A). The nozzle shall 10A).
be plugged at the inlet end with a plug and a
8.0 ILLUSTRATED PARTS CATALOG
Table 1.0 tabulates the parts and sub- The item numbers of the table are keyed to the
assemblies comprising the various adapters exploded views of the units diagrammed in
covered by this manual. Figure 1.
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SM6958 March 2010
TABLE 1.0
Qty/ Spares/10
Item Part Number Description Assy Units/Yr. Used on
1 GF24693C73 Screw 6 6 All
2 61529 Adapter Module (MS24484-2) 1 - All except Option D
6 LP500-6-5 Screw 6 6 All
7 20876 Spider 1 - All
8 2753 Spring 1 - All
9 20748-2 Flange 1 1 All except Option D
10 20780 Valve-Adapter 1 2 All except Option D
2A 61247 Adapter Module (MS24484-5) 1 - Option D only
6 LP500-6-5 Screw 6 6 All
7 20876 Spider 1 - All
8 2753 Spring 1 - All
9A 20748-1 Flange 1 1 Option D only
10A 208197 Valve-Adapter 1 2 Option D only
3A 24176 Body, 2-½" NPT 1 - 6958 Option G only
3B 204563 Body, 2-½" BSPP 1 - 6958 Option H only
3C 210201 Body, 4" TTMA 1 - 61272 only
3D 210136 Body, 4" ANSI 1 - 61409 only
3E 210216 Body, 3" TTMA 1 - 61528 only
3F 220288 Body, 3" ANSI 1 - 64040 only
4 MS29513-153 O-ring 1 10 All (not furnished with 61529)
5 210462 Plug 2 - Some 6958, 61272 and 61528
only
11 41607 Cap, Plastic 1 3 Option B only
11A 61531 Cap, Metal Sealing 1 1 Option A only
Notes: 1. All part numbers beginning with "GF" are interchangeable with those beginning with either "AN"
or "MS". If the "GF" is followed by three numbers it is interchangeable with and "AN" part,
otherwise it is interchangeable with an "MS" part of the same number.
2. The recommended spare parts shown above are the number required to support 10 units for
one year. The recommended quantities are based on the ratio of spare parts sold for each unit
during a one year period of time. The actual quantity required will vary from location to location.
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SM6958 March 2010
Figure 1
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SM6958 March 2010
7
Eaton
Aerospace Group
Conveyance Systems Division
9650 Jeronimo Road
Irvine, CA 92618
Tel (949) 452-9500
Fax (949) 452-9992
