Swing Motor; Disassembly And Inspection - JLG 400S Service And Maintenance Manual

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3.13 SWING MOTOR

1. Place the Torqlink™ in a soft jawed vice, with coupling

shaft (12) pointed down and the vise jaws clamping

firmly on the sides of the housing (18) mounting flange

or port bosses. Remove manifold port O-Rings (18A) if

IFTHETORQLINK™ IS NOT FIRMLY HELD IN THE VISE, IT COULD BE DISLODGED

DURINGTHE SERVICE PROCEDURES, CAUSING INJURY.

2. Scribe an alignment mark down and across the Torq-

link™ components from end cover (2) to housing (18) to

facilitate reassembly orientation where required. Loosen

two shuttle or relief valve plugs (21) for disassembly

later if included in end cover. 3/16 or 3/8 in. Allen

wrench or 1 in. hex socket required.

SECTION 3 - CHASSIS & TURNTABLE

3. Remove the five, six, or seven special ring head bolts (1)

using an appropriate 1/2 or 9/16 in. size socket. Inspect

bolts for damaged threads, or sealing rings, under the

bolt head. Replace damaged bolts.

4. Remove end cover assembly (2) and seal ring (4). Discard

Refer to the appropriate "alternate cover construction" on

the exploded view to determine the end cover construction

being serviced.