I carry out a few Kenwood Chef repairs a year and usually, they can be brought back to full health with simple tools and repair components. I’ve not had a faulty Chef brought in to the workshop which hasn’t left ready for service. Yet.
One common theme with all older machines is that the motor speed control circuitry can fail which either manifests itself with symptoms including, but not restricted to; electrical burning smells and smoke, the motor not running smoothly or not running at all. While the failure of a Kenwood Chef may look spectacular when it happens, the repair is fairly straightforward, if you have some basic skills, tools and some patience.
This particular A901 came in with four faults; poor feet condition, cracked cowling, the speed control knob was loose and once I opened up the motor unit to look further, burned-out capacitors.
To some, this list of faults might seem a bit daunting, but it’s standard fare on a Chef of this age and to be expected after thirty plus years service. Due to the excellent design of the product, the faults are all repairable with commonly available parts.
After about an hours’ work, the feet were replaced, the motor circuitry repaired and the replacement cowling refitted. The speed control knob had come away from the motor body and only required the pin that held it in place ‘pressing’ back in to the housing, resulting in one happy mixer.
One of my aims on this website is to share my experience and best practice so for the first time, I made a video of the complete motor repair in real-time. So, if you have a Chef to repair and twenty minutes, grab yourself some popcorn, a notepad and pen and enjoy.
Cost of replacement: £150.00 and up. Cost of repair: £30 plus my time and tea.
A noisy Kenwood Chef A701a gets a gearbox rebuild.
This Chef had been sleeping quietly in a kitchen cupboard for some time before being woken up to make cake mixtures once again. The owner had owned the mixer for many years from new and was sentimentally attached to it. I fully sympathise, they’re great machines. It had been used many times in the past and then packed away as new machines came and went. Having decided that there was still a place for the A701a, it was fired up.
The owner didn’t remember it being quite as noisy and wondered if something was wrong with it. She got in touch and brought it in to the workshop. After listening to the mixer at varying speeds, we agreed that perhaps it was a bit noisy and that further investigation was required.
At this stage I must confess at this repair has been on the bench for a long while..!
I think the A701 is my favourite Kenwood Chef product as it’s very elegant, beautifully proportioned and almost over-engineered. It comes from a time where built-in obsolescence was a swear word.
On with the problem. After disconnecting the gearbox by removing the drive belt, I checked the motor for general wear and tear, the brushes and speed control mechanism and I concluded that it all seemed OK and working smoothly. The gearbox however did seem a bit noisy when turned manually, nothing hideously graunchy, but a little rough. To be honest, it would have probably survived, but I wanted to open up the gearbox to make sure that it was as it should be.
Whilst removing the Chef’s casing around the gearbox, I’d noticed traces of grease around the joints and various power take-offs. All models seem to do this to an extent, but this one seemed to be quite bad. Closer inspection revealed that some of the grease had escaped out of the seal between the two halves of the gearbox casing. Opening up the casing revealed that the grease that was left had been pushed to the corners of the space within the gearbox and that the gears were a bit dry, this was probably the root cause of the noise. The planet wheel that drives the beater was also bone dry.
FixItWorkshop, Oct’17, Kenwood Chef A701a, gearbox before cleaning.
FixItWorkshop, Oct’17, Kenwood Chef A701a, before cleaning- dirty sticky grease.
Luckily, there are plenty of suppliers who can supply rebuild kits for Kenwood Chef gearboxes, including new gears and grease. The gears in this seemed serviceable, but it seemed very sensible to replace the lubricant with the correct 130g of Kenwood gearbox grease, which is food safe. I used ‘Kenwood Chef Restore’, an eBay seller and the kit was a reasonable £10.99, including P&P. The kit included the main gearbox grease, white grease for the planet gear and sealant for the gearbox casing.
Before replacing anything, the first job was to clean out all traces of the original grease which had gone very sticky and was contaminated with general wear. The first pass clean involved using paper toweling, followed by water and detergent, before a final clean with brake cleaner, which removed the last few traces of grease and dirt.
FixItWorkshop, Oct’17, Kenwood Chef A701a, adding new gearbox grease.
FixItWorkshop, Oct’17, Kenwood Chef A701a, adding new gearbox grease- note spacers.
FixItWorkshop, Oct’17, Kenwood Chef A701a, showing idle gear.
FixItWorkshop, Oct’17, Kenwood Chef A701a, new grease.
FixItWorkshop, Oct’17, Kenwood Chef A701a, before grease.
FixItWorkshop, Oct’17, Kenwood Chef A701a, planet wheel grease.
FixItWorkshop, Oct’17, Kenwood Chef A701a, parts before reassembly to the main body.
With the gearbox refilled and resealed making sure the spacers were re-fitted to the correct parts, the drive belt re-fitted with just enough slack, the gears sounded much sweeter with the final parts of the casing reassembled. One last point to note is that I used silicone sealant on the blender attachment power take-off plate in replacement to the one fitted, since the original seal was well past it (see below).
FixItWorkshop, Oct’17, Kenwood Chef A701a, belt in situ.
FixItWorkshop, Oct’17, Kenwood Chef A701a, adjustment.
FixItWorkshop, Oct’17, Kenwood Chef A701a, cover fitted.
FixItWorkshop, Oct’17, Kenwood Chef A701a, silicone sealant.
As a finishing touch, I replaced the existing machine feet which had turned to mush with replacements from Sussex Spares (eBay shop) for a very reasonable £2.70, delivered.
The Chef was now ready to prepare cake mixtures again.
Cost of new machine: £300 and up. Cost of replacement parts: £13.69 (plus my time).