diff --git a/enhancements/machine-api/machine-health-checking.md b/enhancements/machine-api/machine-health-checking.md
index f49bfa1db09..e529dac7d60 100644
--- a/enhancements/machine-api/machine-health-checking.md
+++ b/enhancements/machine-api/machine-health-checking.md
@@ -154,6 +154,8 @@ Out of band:
 - The machine controller provider deletes the instance.
 - The machine controller deletes the machine.
 
+![Machine health check](./mhc.svg)
+
 #### Out of tree remediation controller, e.g baremetal reboot:
 - An external remediation can plug in by setting the `healthchecking.openshift.io/strategy: reboot` on the MHC resource.
 - An external remediation controller remediation could then watch machines annotated with `healthchecking.openshift.io/remediation: reboot` and react as it sees fit.
diff --git a/enhancements/machine-api/mhc.plantuml b/enhancements/machine-api/mhc.plantuml
new file mode 100644
index 00000000000..ab87df51195
--- /dev/null
+++ b/enhancements/machine-api/mhc.plantuml
@@ -0,0 +1,20 @@
+@startuml
+start;
+:Machine Health Check controller;
+repeat
+  repeat
+    :Watch MHCs;
+    :Find unhealthy targets: Need remediation or going towards timeout;
+  repeat while (unhealthyTargets > maxUnhealthy) is (yes)
+  -> no;
+repeat while (API server machine deletion requests for machines that need remediation) is (requeue with minTime to timeout delay)
+
+-[#blue,dashed]-> Out of band;
+#LightBlue:The machine owner controller watches deletion timestamp.
+Reconciles towards desired number of replicas.
+The process to create a new machine/node starts;
+#LightBlue:The machine controller drains the unhealthy node;
+#LightBlue:The machine controller provider deletes the unhealthy instance;
+#LightBlue:The machine controller removes the unhealthy machine finalizer;
+#LightBlue:The API server removes the unhealthy machine resource;
+@enduml
diff --git a/enhancements/machine-api/mhc.png b/enhancements/machine-api/mhc.png
new file mode 100644
index 00000000000..16f4d538d68
Binary files /dev/null and b/enhancements/machine-api/mhc.png differ
diff --git a/enhancements/machine-api/mhc.svg b/enhancements/machine-api/mhc.svg
new file mode 100644
index 00000000000..af28d3c0c3c
--- /dev/null
+++ b/enhancements/machine-api/mhc.svg
@@ -0,0 +1,32 @@
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stroke-width: 1.0;"/><!--MD5=[c76ae935b8891c05edf39b6d46d7784c]
+@startuml
+start;
+:Machine Health Check controller;
+repeat
+  repeat
+    :Watch MHCs;
+    :Find unhealthy targets: Need remediation or going towards timeout;
+  repeat while (unhealthyTargets > maxUnhealthy) is (yes)
+  -> no;
+repeat while (API server machine deletion requests for machines that need remediation) is (requeue with minTime to timeout delay)
+
+-[#blue,dashed]-> Out of band;
+#LightBlue:The machine owner controller watches deletion timestamp.
+Reconciles towards desired number of replicas.
+The process to create a new machine/node starts;
+#LightBlue:The machine controller drains the unhealthy node;
+#LightBlue:The machine controller provider deletes the unhealthy instance;
+#LightBlue:The machine controller removes the unhealthy machine finalizer;
+#LightBlue:The API server removes the unhealthy machine resource;
+@enduml
+
+PlantUML version 1.2019.12(Sun Nov 03 10:24:54 UTC 2019)
+(GPL source distribution)
+Java Runtime: Java(TM) SE Runtime Environment
+JVM: Java HotSpot(TM) 64-Bit Server VM
+Java Version: 1.7.0_25-b15
+Operating System: Linux
+Default Encoding: UTF-8
+Language: en
+Country: US
+--></g></svg>
\ No newline at end of file