06/10/2014 As per the Bridgeport maint manual: 1.
Isolate machine from power.
Remove belt guards, if you have them.
Lower quill to full extension 6.
Remove 6 screws between the belt housing and gear housing.
Remove belt housing, might have to tap with rubber mallet.
Change out belts.
Reassemble in reverse.
09/11/2005 I have a UK Bridgeport parts book from the mid 1970’s, it lists the J – head V belt as “Gilmer 4LS 345″ Make any sense?
Not a belt type I have heard of.
11-01-2005, 05:27 PM #3.
View Profile View Forum Posts Senior Member Join Date Jul 2004 Location Troy, NY, USA.
Seller: wheelermchy (369) 100%, Location: Pomona, California, Ships to: US, Item: 171946588137 Wheeler Machinery Sales, Inc.
247 Pacific St Pomona CA 91768 J – HEAD , BRIDGEPORT , 1 HP, Belt Change, X-Axis Power Feed, Slotting Attachment Our stock number: 3967 Specifications: Table Size.
9″ x 42″ Quill Travel.
5″ Spindle Type.
R8 Spindle Speeds.
80 to 2750 RPM Number Of #, to slip the belt off the motor pulley and remove the motor.
Easy removal of the head T-bolts or head tilt adjusting Screw Put and clamp a vise onto the table (If you have a riser block on the machine you may have to block up the vise) Now crank the knee all the way up to the bottom of the head.
I did this when I# changed both of my belts.
if your just changing the v belt you have to remove the plate off the rear pulley to remove the top.
mrpete222 November 17, 2012 This video MACHINE SHOP# TIPS #14 BRIDGEPORT MILL Parts (B) tubalcain.
Bridgeport J head step pulley disassembly and reassembly.
Note some pictures show the head partially painted, but it is the same machine.
Loosen motor mounting bolts, slacken drive belt , disconnect wiring from junction box rather than at the motor switch if possible and #, BRIDGEPORT MILL PART, milling machine STEP PULLEY”V” BELT 1192101 M1256 NEW!! $31.
98 PENSON & CO.
5/8″ T-Slot Clamp Kit 58 pcs 1/2″-13 Stud Hold Down Clamping Set Upgraded for Bridgeport #, Removing the drive belt in a Bridgeport Milling machine can be a difficult process, but following the correct steps, you can have access to this belt for replacement in a relatively short time.
Once you replace the belt , it will be even easier to reassemble the mill and you will have a stronger, more accurate response from the machine.
This kit containes everything you will need to complete a standard top half rebuild on your Bridgeport Series I ” J ” Head (Step Pulley).
The kit includes the following new parts: Drive Belt (1), Timing Belt (1), Top Half Bearings (6) & a tube of grease for the bull gear area of the head.
Bridgeport Mill Part, J Head Milling Machine 1 1/2 OR 2 HP Variable Speed DRIVE BELT 182120 M1105 5.
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