ML7 Carriage shims and wear

This topic has 2 replies, 2 voices, and was last updated 3 May 2019 at 18:48 by Mike Crossfield.

Viewing 3 posts - 1 through 3 (of 3 total)

Author

Posts
3 May 2019 at 18:04 #9650
Brainsparks30
Participant
@brainsparks30
Advert

3 May 2019 at 18:04 #407624
Brainsparks30
Participant
@brainsparks30
I stripped the carriage for cleaning, (all full of iron chips) and noticed grease had been used, which I understand is bad.

But what really vexed me is that after cleaning and oiling, when reassembled, the carriage locks up solid when the screws at the front are tightend.

It is shimmed front and rear, is it possible someone had used shims to thick?

They don't look like plain brass except were it appears to have worn through the grey coating on one.

The screws holding the front retaining strip were a bit too easy to remove and I wonder if they had been used to adjust play.

This makes me wonder about wear and how to measure how worn parts are.
3 May 2019 at 18:48 #407631
Mike Crossfield
Participant
@mikecrossfield92481
The correct shims are made up of a laminated stack, each individual shim being 2 thou thick. To reduce the thickness, and remove play, shins can be peeled off the stack with a sharp knife. It could be that the previous owner has removed too much, and compensated by leaving the clamping screws loose. You could buy new shims, but I would be inclined to try adding some extra shim material until you get the required clearance.
Author

Posts

Viewing 3 posts - 1 through 3 (of 3 total)

Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

Advert

Latest Replies

Viewing 25 topics - 1 through 25 (of 25 total)

- Topic
- Voices
- Posts
- Last Post
- Boiler explosion on Guadeloupe.
  Started by: howardb in: The Tea Room
- 4
- 5
- 27 July 2026 at 13:56
  duncan webster 1
- Bengs kits
  Started by: paul1956 in: Beginners questions
- 4
- 5
- 27 July 2026 at 13:22
  JasonB
- Garden water pump
  Started by: John MC in: The Tea Room
- 12
- 17
- 27 July 2026 at 13:21
  duncan webster 1
- blackgates eng 1 2
  Started by: Peter Daw in: Beginners questions
- 18
- 30
- 27 July 2026 at 13:07
  David Hill
- Peat-Shaped [ ref. Verdict DTI ]
  Started by: Michael Gilligan in: Workshop Tools and Tooling
- 1
- 1
- 27 July 2026 at 12:40
  Michael Gilligan
- Silver Soldering
  Started by: Jss in: General Questions
- 10
- 14
- 27 July 2026 at 12:29
  duncan webster 1
- chester conquest pcb board connections
  Started by: In Wilson in: Introduce Yourself – New members start here!
- 5
- 14
- 27 July 2026 at 11:54
  Basil Henriques
- Latest new addon for FreeCAD!!
  Started by: Russell Eberhardt in: CAD – Technical drawing & design
- 2
- 3
- 27 July 2026 at 10:05
  Russell Eberhardt
- Plug in Solar 1 2 3 4
  Started by: Vic in: The Tea Room
- 28
- 94
- 27 July 2026 at 09:27
  not done it yet
- New motor for a Myford super 7
  Started by: Hollowpoint in: Electronics in the Workshop
- 9
- 12
- 27 July 2026 at 09:17
  IanT
- Super Simplex Build
  Started by: Peter Hoerlein in: Work In Progress and completed items
- 7
- 19
- 27 July 2026 at 06:29
  Peter Hoerlein
- Hobbing a Brass or Aluminium Drive Pulley to Stop Belt Slippage
  Started by: Blue Heeler in: Hints And Tips for model engineers
- 7
- 15
- 27 July 2026 at 00:45
  Blue Heeler
- All things Beaver Mill 1 2 … 9 10
  Started by: Robert James 3 in: Manual machine tools
- 43
- 232
- 26 July 2026 at 23:45
  Lex Davis
- It’s A Compressor, Jim, But Not… 1 2
  Started by: Nigel Graham 2 in: General Questions
- 13
- 37
- 26 July 2026 at 22:51
  Nigel Graham 2
- Long awaited FreeCAD version 1.1 released
  Started by: Russell Eberhardt in: CAD – Technical drawing & design
- 3
- 9
- 26 July 2026 at 15:36
  Russell Eberhardt
- Looking for detailed build logs to help decide next project
  Started by: GrahamS in: Stationary engines
- 4
- 8
- 26 July 2026 at 10:57
  GrahamS
- Deep drilling
  Started by: Speedy Builder5 in: Workshop Techniques
- 12
- 25
- 26 July 2026 at 07:58
  Dalboy
- Is anyone interested in developping a new series of model engines? 1 2 3 4
  Started by: paulmichael1084 in: General Questions
- 20
- 86
- 26 July 2026 at 00:42
  paulmichael1084
- Buzz Ballz packaging “unrecyclable” in U.K.
  Started by: Michael Gilligan in: The Tea Room
- 6
- 6
- 25 July 2026 at 23:16
  Bazyle
- My week this week! My workshop videos 1 2 … 12 13
  Started by: Phil Whitley in: The Tea Room
- 16
- 325
- 25 July 2026 at 19:23
  Phil Whitley
- Mysterious Morse Tapers
  Started by: Pippin in: Workshop Tools and Tooling
- 10
- 18
- 25 July 2026 at 17:12
  Pippin
- REXON SS16A scroll saw
  Started by: Michael Gilligan in: Workshop Tools and Tooling
- 3
- 7
- 24 July 2026 at 22:32
  Michael Gilligan
- Posts by new member containing ads.
  Started by: alecs in: Website Questions, Comments, and Suggestions
- 5
- 9
- 24 July 2026 at 20:22
  bernard towers
- Doris Black 5 mech lubricator question.
  Started by: kevmol57 in: Workshop Techniques
- 4
- 10
- 24 July 2026 at 13:25
  kevmol57
- 24cc DIESEL ENGINE FROM SOLID 1 2 3
  Started by: dean clarke 2 in: I/C Engines
- 13
- 71
- 24 July 2026 at 10:27
  KEITH BEAUMONT

ML7 Carriage shims and wear

ML7 Carriage shims and wear

Latest Replies

Latest Issue

August 2026

Newsletter Sign-up

Latest Replies