IBM N O . 67-966-0005

TECHNICAL MANUAL

S-IVB FORWARD/INSTRUMENT UNIT UMBILICAL ASSEMBLY, SATURN IB/V

Prepared under Contract

b Y

International Business Machines Corporation

Federal Systems Division

Huntsville, Alabama

1 April 1967 Changed 19 September 1972

MSFC-MAN-010 IBM No. 67-966-0005

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Saturn Umbil Assy - Section I

L 1 / 4 Compartment Leak Detection I

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s NOTE: ~ l l i t e h s on this illustration are shown as reference only.

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Figure 1-3 IU ~ o u s i n ~ ~ssembly-and Associated components

MSFC-MAN-010 IBM NO. 67-96610005

Umbil Assy, Sat. V Section I1

In the event the primary laynard does not cause Umbilical Assembly release, the second lay- nard attached to the torque tube is actuated when the vehicle has risen approximately 18 inches from the pad. The action of the second laynard pulls the torque tube and cam arm down which actuates the mechanical 4-ball lock assembly release, and sub- sequent removal of the Umbilical Assembly.

2- 5 ELECTRICAL EJECT PLATE ASSEMBLY

The Eject Plate (see Figure 1-4) functions a s an interface between the ground support input electrical cables and the IU Housing Assembly for the purpose of disconnecting the electrical cables while performing plugs-out tests upon the Instrument Unit.

Pneumatic pressure (GN2) of 750 psig is applied through the pneumatic input line into the Eject Plate manifold system and actuates the three pneumatic actuators.

Umbilical Assembly are not required for the Test Assembly, but the quantity and configuration of elec- trical cables a r e identical with the cables supplied to the Instrument Unit from the Apollo-Saturn Service Arm.

2-8 INSTALLATION AND REMOVAL PROCEDURES

The following procedures present information for the installation of the Umbilical Assembly onto the Apollo-Saturn Vehicle. The procedures also include information necessary to accomplish the installation of the IU Housing Assembly and the S-IVB Carrier Assembly. All associated items required to com- plete the installation of the major components will be discussed. It is assumed at this time that all com- ponents a re in satisfactory condition and no mainten- ance is required prior to installation.

NOTE

Instructions for the maintenance or repair of items contained on major components a r e discussed within Sec-

By piston action, the pneumatic actuators tion III. slide the Eject Plate back and away from the IU Housing Assembly. Since the electrical connectors All designated torque values a r e in accord- a r e mounted to the Eject Plate, the cable connectors ance with ABMA-STD-18, Threaded Fasteners; and a r e disconnected from the electrical receptacles MSFC Design Standard MC 245, Installation of Straight located upon the IU Vehicle Plate Assembly (not Thread Flared Tube Fittings, o r applicable engineer- shown). ing instructions.

The action described does not affect either During the installation and removal proce - the 6-inch conditioning duct or the six quick dis- dures, the following tools will be required: connect couplings mounted upon the IU Housing Assem- bly.

A flexible hose extends from the Eject Plate to the electrical eject mechanism located upon the

a Torque wrench and adapters 1/4-inch through 1 -inch

a Mechanic's general purpose tool kit.

S-IVB Carrier Assembly and will provide the pneu- matic pressure to effect a simultaneous eject of the 2-9 IU HOUSING ASSEMBLY ON S-IVB CARRDCR

S-IVB Carrier Assembly electrical connectors. ASSEMBLY

2-6 ELECTRICAL GROUND SYSTEM During the following procedures refer to Figure 7- 1.

As illustrated on Figures 1-3, 1-4, and 1-5, electrical ground receptacles a re located upon the NOTE - IU Housing Assembly, Eject Plate, and the S-IVB Carrier Assembly. These connectors receive the The quick disconnect couplings a r e re - electrical cable shielding leads and provide a ground moved from the IU Housing Assembly path to the Apollo-Saturn V Vehicle. and a r e not installed at this time.

2-7 IU UMBILICAL HOUSING TEST ASSEMBLY INSTALLATION

The Test Assembly illustrated on Figure 1-6, a. Position IU Housing Assembly (1) beneath

depends upon the action of the 4-ball lock assembly S-IVB Carrier supports so that IU Housing Assem-

and the four kickoff pistons to eject the Test Assembly. bly mounting holes a re aligned with S-NB Carrier

The cam a r m s and associated cams used upon the IU support mounting brackets.

Changed 20 November 1970 2-5

MSFC-MAN-010 Saturn Umbil Assy IBM No. 67-966-0005 Section I1

b. Using 8 bolts (2) and flat washers (3) install until the lockbolt (7) tip is engaged in the lockbolt the IU Housing Assembly. Leave the bolts loose receptacle mounted on the IU Vehicle Plate Assem- so that the lower half of the Umbilical Assembly bly . may be adjusted.

h. Release the lockbolt knob. This action locks

REMOVAL the TU Housing Assembly in position.

i. Thread lockbolt (7, Figure 7-2) clockwise until a. Using standard shop practices remove the finger tight only, thereby locking lockbolt with IU

attaching bolts (2) and washers (3), then remove vehicle plate receptacle. IU Housing Assembly (1) from Carrier Assembly (4).

2 - 10 UMBILICAL ASSEMBLY ON APOLLO-SATURN No wrench or tool shall be used to tighten VEHICLE the lockbolt, a s this may cause failure to

INSTALLATION disconnect.

a . Remove all service lines which may be attached to the umbilical.

b. Assure that 4-ball lock assembly (hereafter referred to a s lockbolt) is firmly seated within the IU Housing Assembly by rotating lockbolt (7, Fig. 7-2) counterclockwise until finger tight.

NOTE

It may be necessary to loosen locking nut (2) to firmly seat lockbolt.

c. Position the Umbilical Assembly approximately 6 to 8 inches from the IU, and initially align the IU

IU Housing Assembly attitude, when installed, must maintain a minimum gap between the IU Housing Assembly and the IU Vehicle Plate Assembly to ensure proper mating of all other associated IU Housing Assembly components. See Figure 1-3 for dimension to determine if minimum gap is obtained. I

j. Thread lockbolt knob on release shaft until the knob contacts the release a rm (1, Fig. 7-2) and secure with locking nut (2).

Housing Assembly with the IU Vehicle Plate Assem- bly. k. Rotate S-IVB end assemblies (see Fig. 2-3)

as far forward as possible -- surfaces must be

d. Loosen 4 bolts (34, Fig. 7-3) on each of the touching a s illustrated in Figure 2-3. Tighten

S -1VB Carrier end assemblies (33, Fig. 7 -3 - DO I the eight end assembly bolts and torque 160-190

NOT REMOVE BOLTS. inch pounds.

1. Torque the eight' mounting bolts (2, Fig. 7- 1) e. Manually push bottom of Umbilical Assembly

170 * 10 inch pounds. toward vehicle until the S-IVB Carrier end assem- blies can be mated with the S-IVB Forward Umbilical Support Brackets (refer to Figure 2-3 for illustration of the mechanical mating). The end assemblies must res t over the supporting bolt as indicated on the Fig- ure. When proper mating has occurred, the support- ing bolt cannot be hand turned.

f. With Umbilical Assembly mounted on S-IVB Forward Umbilical support brackets, push the Um- bilical Assembly toward the vehicle until the IU Housing Assembly is aligned with the IU Vehicle Plate Assembly.

g. Manually pull the lockbolt release knob (3, Fig. 7-2) out a s far as possible, and while holding in this position, push the IU Housing Assembly forward

REMOVAL

NOTE

All service lines leading to Umbilical Assembly must be removed.

a. Manually pull lockbolt knob (3, Fig. 7-2) away from release a rm (1, Fig. 7-2). This action will release lockbolt and allow the Umbilical Assembly to be moved back and away from the vehicle.

b. Pull entire Umbilical Assembly back and away from the vehicle. The Umbilical Assembly end assemblies pivot on the supporting bolts of the S-IVB Forward Umbilical support brackets (see Fig. 2-3), and a s the Umbilical Assembly is brought back and away, the S-IVB Carrier end assemblies

2-6 Changed 19 September 1972 -

NOTICE

The enclosed pages comprise Change NO. 1 to the following technical manual:

Control Accelerometer

IBM NO. 66-966-001 2

Before inserting these change pages, your manual title page must reflect the following date:

Basic date 1 February 1971

Should the date on your manual be incorrect, direct inquiries to:

IBM Corporation Federal Systems Division P.O. Box 1250 Huntsville, Alabama 35807

ATTN: Department U18, Manual Distribution

The enclosed pages change, delete, or supplement the information in your technical manual. Insert these pages (See page A, "List of Effective Pages," contained in the change pages) and destroy the pages they replace. The level of each page is noted by the date a t the bottom of the page; original pages are not dated.

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